Added POW settings to settings window

src/bitmessageqt/__init__.py

@@ -55,6 +55,7 @@ import sound
 import re
 import bitmessage_icons_rc # Loads icon resources
 import workprover.utils
+import singleworker
 
 
 try:
@@ -2616,9 +2617,34 @@ class MyForm(settingsmixin.SMainWindow):
                 BMConfigParser().set('bitmessagesettings', 'defaultpayloadlengthextrabytes', str(int(float(
                     self.settingsDialogInstance.ui.lineEditSmallMessageDifficulty.text()) * defaults.networkDefaultPayloadLengthExtraBytes)))
 
-            if self.settingsDialogInstance.ui.comboBoxOpenCL.currentText().toUtf8() != BMConfigParser().safeGet("bitmessagesettings", "opencl"):
+            if self.settingsDialogInstance.ui.radioButtonDumbSolver.isChecked():
-                BMConfigParser().set('bitmessagesettings', 'opencl', str(self.settingsDialogInstance.ui.comboBoxOpenCL.currentText()))
+                BMConfigParser().set("bitmessagesettings", "powsolver", "dumb")
-                queues.workerQueue.put(('resetPoW', ''))
+            elif self.settingsDialogInstance.ui.radioButtonForkingSolver.isChecked():
+                BMConfigParser().set("bitmessagesettings", "powsolver", "forking")
+
+                BMConfigParser().set(
+                    "bitmessagesettings",
+                    "processes",
+                    str(self.settingsDialogInstance.ui.spinBoxForkingSolverParallelism.value())
+                )
+            elif self.settingsDialogInstance.ui.radioButtonFastSolver.isChecked():
+                BMConfigParser().set("bitmessagesettings", "powsolver", "fast")
+
+                BMConfigParser().set(
+                    "bitmessagesettings",
+                    "threads",
+                    str(self.settingsDialogInstance.ui.spinBoxFastSolverParallelism.value())
+                )
+            elif self.settingsDialogInstance.ui.radioButtonGPUSolver.isChecked():
+                BMConfigParser().set("bitmessagesettings", "powsolver", "gpu")
+
+                BMConfigParser().set(
+                    "bitmessagesettings",
+                    "opencl",
+                    str(self.settingsDialogInstance.ui.comboBoxGPUVendor.currentText().toUtf8())
+                )
+
+            singleworker.setBestSolver()
 
             acceptableDifficultyChanged = False
             
@@ -4547,18 +4573,43 @@ class settingsDialog(QtGui.QDialog):
         self.ui.lineEditMaxAcceptableSmallMessageDifficulty.setText(str((float(BMConfigParser().getint(
             'bitmessagesettings', 'maxacceptablepayloadlengthextrabytes')) / defaults.networkDefaultPayloadLengthExtraBytes)))
 
-        # OpenCL
+        if "forking" not in singleworker.workProver.availableSolvers:
-        if openclpow.openclAvailable():
+            self.ui.radioButtonForkingSolver.setEnabled(False)
-            self.ui.comboBoxOpenCL.setEnabled(True)
+        if "fast" not in singleworker.workProver.availableSolvers:
-        else:
+            self.ui.radioButtonFastSolver.setEnabled(False)
-            self.ui.comboBoxOpenCL.setEnabled(False)
+        if "gpu" not in singleworker.workProver.availableSolvers:
-        self.ui.comboBoxOpenCL.clear()
+            self.ui.radioButtonGPUSolver.setEnabled(False)
-        self.ui.comboBoxOpenCL.addItem("None")
+
-        self.ui.comboBoxOpenCL.addItems(openclpow.vendors)
+        solverName = BMConfigParser().safeGet("bitmessagesettings", "powsolver", "gpu")
-        self.ui.comboBoxOpenCL.setCurrentIndex(0)
+        forkingSolverParallelism = BMConfigParser().safeGetInt("bitmessagesettings", "processes")
-        for i in range(self.ui.comboBoxOpenCL.count()):
+        fastSolverParallelism = BMConfigParser().safeGetInt("bitmessagesettings", "threads")
-            if self.ui.comboBoxOpenCL.itemText(i) == BMConfigParser().safeGet('bitmessagesettings', 'opencl'):
+        GPUVendor = BMConfigParser().safeGet("bitmessagesettings", "opencl")
-                self.ui.comboBoxOpenCL.setCurrentIndex(i)
+
+        if solverName == "dumb":
+            self.ui.radioButtonDumbSolver.setChecked(True)
+        elif solverName == "forking":
+            self.ui.radioButtonForkingSolver.setChecked(True)
+        elif solverName == "fast":
+            self.ui.radioButtonFastSolver.setChecked(True)
+        elif solverName == "gpu":
+            self.ui.radioButtonGPUSolver.setChecked(True)
+
+        self.ui.spinBoxForkingSolverParallelism.setValue(forkingSolverParallelism)
+        self.ui.spinBoxFastSolverParallelism.setValue(fastSolverParallelism)
+
+        vendors = set(singleworker.workProver.availableSolvers["gpu"].vendors)
+
+        if GPUVendor is not None:
+            vendors.add(GPUVendor)
+
+        self.ui.comboBoxGPUVendor.clear()
+        self.ui.comboBoxGPUVendor.addItems(list(vendors))
+        self.ui.comboBoxGPUVendor.setCurrentIndex(0)
+
+        for i in range(self.ui.comboBoxGPUVendor.count()):
+            if self.ui.comboBoxGPUVendor.itemText(i) == GPUVendor:
+                self.ui.comboBoxGPUVendor.setCurrentIndex(i)
+
                 break
 
         # Namecoin integration tab

src/bitmessageqt/settings.ui

@@ -6,7 +6,7 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>555</width>
+    <width>616</width>
     <height>592</height>
    </rect>
   </property>
@@ -14,16 +14,6 @@
    <string>Settings</string>
   </property>
   <layout class="QGridLayout" name="gridLayout">
-   <item row="1" column="0">
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="orientation">
-      <enum>Qt::Horizontal</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
-     </property>
-    </widget>
-   </item>
    <item row="0" column="0">
     <widget class="QTabWidget" name="tabWidgetSettings">
      <property name="currentIndex">
@@ -549,13 +539,13 @@
        <string>Max acceptable difficulty</string>
       </attribute>
       <layout class="QGridLayout" name="gridLayout_7">
-       <item row="0" column="0" colspan="3">
+       <item row="2" column="1">
-        <widget class="QLabel" name="label_15">
+        <widget class="QLabel" name="label_14">
          <property name="text">
-          <string>Here you may set the maximum amount of work you are willing to do to send a message to another person. Setting these values to 0 means that any value is acceptable.</string>
+          <string>Maximum acceptable small message difficulty:</string>
          </property>
-         <property name="wordWrap">
+         <property name="alignment">
-          <bool>true</bool>
+          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
          </property>
         </widget>
        </item>
@@ -585,6 +575,32 @@
          </property>
         </widget>
        </item>
+       <item row="0" column="0" colspan="3">
+        <widget class="QLabel" name="label_15">
+         <property name="text">
+          <string>Here you may set the maximum amount of work you are willing to do to send a message to another person. Setting these values to 0 means that any value is acceptable.</string>
+         </property>
+         <property name="wordWrap">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item row="2" column="2">
+        <widget class="QLineEdit" name="lineEditMaxAcceptableSmallMessageDifficulty">
+         <property name="sizePolicy">
+          <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+           <horstretch>0</horstretch>
+           <verstretch>0</verstretch>
+          </sizepolicy>
+         </property>
+         <property name="maximumSize">
+          <size>
+           <width>70</width>
+           <height>16777215</height>
+          </size>
+         </property>
+        </widget>
+       </item>
        <item row="1" column="2">
         <widget class="QLineEdit" name="lineEditMaxAcceptableTotalDifficulty">
          <property name="sizePolicy">
@@ -614,33 +630,142 @@
          </property>
         </spacer>
        </item>
-       <item row="2" column="1">
+       <item row="3" column="0" colspan="3">
-        <widget class="QLabel" name="label_14">
+        <widget class="QGroupBox" name="groupBoxSolvers">
-         <property name="text">
+         <property name="title">
-          <string>Maximum acceptable small message difficulty:</string>
+          <string>Proof of work solver</string>
-         </property>
-         <property name="alignment">
-          <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
          </property>
+         <layout class="QGridLayout" name="gridLayout_10">
+          <item row="0" column="0">
+           <widget class="QLabel" name="labelSolvers">
+            <property name="text">
+             <string>There are several worker modules to solve POW:</string>
+            </property>
+           </widget>
+          </item>
+          <item row="2" column="0" colspan="2">
+           <layout class="QHBoxLayout" name="horizontalLayoutForkingSolver">
+            <item>
+             <widget class="QRadioButton" name="radioButtonForkingSolver">
+              <property name="text">
+               <string>Forking solver using multiple processes:</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QSpinBox" name="spinBoxForkingSolverParallelism">
+              <property name="minimum">
+               <number>1</number>
+              </property>
+              <property name="maximum">
+               <number>4096</number>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacerForkingSolver">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
+          <item row="4" column="0" colspan="2">
+           <layout class="QHBoxLayout" name="horizontalLayoutFastSolver">
+            <item>
+             <widget class="QRadioButton" name="radioButtonFastSolver">
+              <property name="text">
+               <string>Fast solver in C with multiple threads:</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QSpinBox" name="spinBoxFastSolverParallelism">
+              <property name="minimum">
+               <number>1</number>
+              </property>
+              <property name="maximum">
+               <number>4096</number>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacerFastSolver">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
+          <item row="1" column="0" colspan="2">
+           <layout class="QHBoxLayout" name="horizontalLayoutDumbSolver">
+            <item>
+             <widget class="QRadioButton" name="radioButtonDumbSolver">
+              <property name="text">
+               <string>Dumb solver</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacerDumbSolver">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
+          <item row="5" column="0" colspan="2">
+           <layout class="QHBoxLayout" name="horizontalLayoutGPUSolver">
+            <item>
+             <widget class="QRadioButton" name="radioButtonGPUSolver">
+              <property name="text">
+               <string>GPU solver:</string>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <widget class="QComboBox" name="comboBoxGPUVendor"/>
+            </item>
+            <item>
+             <spacer name="horizontalSpacerGPUSolver">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
+         </layout>
         </widget>
        </item>
-       <item row="2" column="2">
+       <item row="5" column="0" colspan="3">
-        <widget class="QLineEdit" name="lineEditMaxAcceptableSmallMessageDifficulty">
-         <property name="sizePolicy">
-          <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-           <horstretch>0</horstretch>
-           <verstretch>0</verstretch>
-          </sizepolicy>
-         </property>
-         <property name="maximumSize">
-          <size>
-           <width>70</width>
-           <height>16777215</height>
-          </size>
-         </property>
-        </widget>
-       </item>
-       <item row="3" column="1">
         <spacer name="verticalSpacer_3">
          <property name="orientation">
           <enum>Qt::Vertical</enum>
@@ -653,16 +778,6 @@
          </property>
         </spacer>
        </item>
-       <item row="4" column="0">
-        <widget class="QLabel" name="labelOpenCL">
-         <property name="text">
-          <string>Hardware GPU acceleration (OpenCL):</string>
-         </property>
-        </widget>
-       </item>
-       <item row="4" column="1">
-        <widget class="QComboBox" name="comboBoxOpenCL"/>
-       </item>
       </layout>
      </widget>
      <widget class="QWidget" name="tabNamecoin">
@@ -981,6 +1096,16 @@
      </widget>
     </widget>
    </item>
+   <item row="1" column="0">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <tabstops>
@@ -998,6 +1123,7 @@
   <tabstop>checkBoxSocksListen</tabstop>
   <tabstop>buttonBox</tabstop>
  </tabstops>
+ <resources/>
  <connections>
   <connection>
    <sender>buttonBox</sender>

src/singleworker.py

@@ -221,6 +221,66 @@ def disseminateObject(nonce, expiryTime, headlessPayload, objectType, stream, ta
 
     return inventoryHash, payload
 
+workProver = workprover.WorkProver(
+    os.path.join(paths.codePath(), "workprover"),
+    helper_random.randomBytes(32),
+    lambda status: queues.UISignalQueue.put(("updateWorkProverStatus", status)),
+    queues.workerQueue
+)
+
+debug.logger.info("Availabe solvers: %s", str(workProver.availableSolvers.keys()))
+
+if "fast" not in workProver.availableSolvers:
+    queues.UISignalQueue.put(("updateStatusBar", (
+        tr._translate(
+            "proofofwork",
+            "C PoW module unavailable. Please build it."
+        ), 1
+    )))
+
+def setBestSolver():
+    solverName = bmconfigparser.BMConfigParser().safeGet("bitmessagesettings", "powsolver", "gpu")
+    forkingSolverParallelism = bmconfigparser.BMConfigParser().safeGetInt("bitmessagesettings", "processes")
+    fastSolverParallelism = bmconfigparser.BMConfigParser().safeGetInt("bitmessagesettings", "threads")
+    GPUVendor = bmconfigparser.BMConfigParser().safeGet("bitmessagesettings", "opencl")
+
+    if forkingSolverParallelism < 1:
+        forkingSolverParallelism = workProver.defaultParallelism
+
+    if fastSolverParallelism < 1:
+        fastSolverParallelism = workProver.defaultParallelism
+
+    maxcores = bmconfigparser.BMConfigParser().safeGetInt("bitmessagesettings", "maxcores", None)
+
+    if maxcores is not None:
+        forkingSolverParallelism = min(maxcores, forkingSolverParallelism)
+        fastSolverParallelism = min(maxcores, fastSolverParallelism)
+
+    if solverName == "gpu" and GPUVendor is None:
+        solverName = "fast"
+
+    while solverName not in workProver.availableSolvers:
+        if solverName == "gpu":
+            solverName = "fast"
+        elif solverName == "fast":
+            solverName = "forking"
+        elif solverName == "forking":
+            solverName = "dumb"
+
+    bmconfigparser.BMConfigParser().set("bitmessagesettings", "powsolver", solverName)
+    bmconfigparser.BMConfigParser().set("bitmessagesettings", "processes", str(forkingSolverParallelism))
+    bmconfigparser.BMConfigParser().set("bitmessagesettings", "threads", str(fastSolverParallelism))
+    bmconfigparser.BMConfigParser().save()
+
+    if solverName in ["dumb", "gpu"]:
+        workProver.commandsQueue.put(("setSolver", solverName, None))
+    elif solverName == "forking":
+        workProver.commandsQueue.put(("setSolver", "forking", forkingSolverParallelism))
+    elif solverName == "fast":
+        workProver.commandsQueue.put(("setSolver", "fast", fastSolverParallelism))
+
+setBestSolver()
+
 class singleWorker(threading.Thread, helper_threading.StoppableThread):
     name = "singleWorker"
 
@@ -235,41 +295,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
         super(self.__class__, self).stopThread()
 
     def run(self):
-        GPUVendor = bmconfigparser.BMConfigParser().safeGet("bitmessagesettings", "opencl")
+        workProver.start()
-
-        self.workProver = workprover.WorkProver(
-            os.path.join(paths.codePath(), "workprover"),
-            GPUVendor,
-            helper_random.randomBytes(32),
-            lambda status: queues.UISignalQueue.put(("updateWorkProverStatus", status)),
-            queues.workerQueue
-        )
-
-        self.workProver.start()
-
-        parallelism = bmconfigparser.BMConfigParser().safeGetInt("bitmessagesettings", "maxcores")
-
-        if parallelism < 1:
-            parallelism = self.workProver.defaultParallelism
-
-        debug.logger.info("Availabe solvers: %s", str(self.workProver.availableSolvers.keys()))
-
-        if "gpu" in self.workProver.availableSolvers and GPUVendor is not None:
-            self.workProver.commandsQueue.put(("setSolver", "gpu", None))
-        elif "fast" in self.workProver.availableSolvers:
-            self.workProver.commandsQueue.put(("setSolver", "fast", parallelism))
-        elif "forking" in self.workProver.availableSolvers:
-            self.workProver.commandsQueue.put(("setSolver", "forking", parallelism))
-        else:
-            self.workProver.commandsQueue.put(("setSolver", "dumb", None))
-
-        if "fast" not in self.workProver.availableSolvers:
-            queues.UISignalQueue.put(("updateStatusBar", (
-                tr._translate(
-                    "proofofwork",
-                    "C PoW module unavailable. Please build it."
-                ), 1
-            )))
 
         self.startedWorks = {}
 
@@ -299,16 +325,34 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
                 self.requestPubkey(*arguments)
             elif command == "resetPoW":
                 pass
+            elif command == "GPUError":
+                self.handleGPUError(*arguments)
             elif command == "taskDone":
                 self.workDone(*arguments)
             elif command == "stopThread":
-                self.workProver.commandsQueue.put(("shutdown", ))
+                workProver.commandsQueue.put(("shutdown", ))
-                self.workProver.join()
+                workProver.join()
 
                 break
 
         debug.logger.info("Quitting...")
 
+    def handleGPUError(self):
+        bmconfigparser.BMConfigParser().set("bitmessagesettings", "powsolver", "dumb")
+
+        workProver.commandsQueue.put(("setSolver", "dumb", None))
+
+        debug.logger.error(
+            "Your GPU(s) did not calculate correctly, disabling OpenCL. Please report to the developers"
+        )
+
+        queues.UISignalQueue.put(("updateStatusBar", (
+            tr._translate(
+                "MainWindow",
+                "Your GPU(s) did not calculate correctly, disabling OpenCL. Please report to the developers."
+            ), 1
+        )))
+
     def startWork(self, ID, headlessPayload, TTL, expiryTime, byteDifficulty, lengthExtension, logPrefix, callback):
         debug.logger.info(
             "%s Starting work %s, payload length = %s, TTL = %s",
@@ -317,7 +361,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
 
         self.startedWorks[ID] = callback
 
-        self.workProver.commandsQueue.put((
+        workProver.commandsQueue.put((
             "addTask", ID, headlessPayload, TTL, expiryTime,
             byteDifficulty, lengthExtension
         ))
@@ -588,7 +632,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
         if ID in self.startedWorks:
             del self.startedWorks[ID]
 
-            self.workProver.commandsQueue.put(("cancelTask", ID))
+            workProver.commandsQueue.put(("cancelTask", ID))
 
         helper_sql.sqlExecute("""
             UPDATE "sent" SET "status" = 'broadcastcanceled'
@@ -906,14 +950,14 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
         if ID in self.startedWorks:
             del self.startedWorks[ID]
 
-            self.workProver.commandsQueue.put(("cancelTask", ID))
+            workProver.commandsQueue.put(("cancelTask", ID))
 
         ID = "message", ackData
 
         if ID in self.startedWorks:
             del self.startedWorks[ID]
 
-            self.workProver.commandsQueue.put(("cancelTask", ID))
+            workProver.commandsQueue.put(("cancelTask", ID))
 
         state.watchedAckData -= {ackData}
 
@@ -933,7 +977,7 @@ class singleWorker(threading.Thread, helper_threading.StoppableThread):
                 if ID in self.startedWorks:
                     del self.startedWorks[ID]
 
-                    self.workProver.commandsQueue.put(("cancelTask", ID))
+                    workProver.commandsQueue.put(("cancelTask", ID))
 
                 status, version, stream, ripe = addresses.decodeAddress(destination)
 

src/workprover/__init__.py

@@ -30,10 +30,12 @@ class Task(object):
 
 Status = collections.namedtuple("Status", ["solverName", "solverStatus", "speed", "tasksCount", "difficulty"])
 
+# Only one instance allowed
+
 class WorkProver(threading.Thread):
     # Seed must be 32 bytes
 
-    def __init__(self, codePath, GPUVendor, seed, statusUpdated, resultsQueue):
+    def __init__(self, codePath, seed, statusUpdated, resultsQueue):
         super(self.__class__, self).__init__()
 
         self.availableSolvers = {
@@ -56,7 +58,7 @@ class WorkProver(threading.Thread):
             pass
 
         try:
-            self.availableSolvers["gpu"] = gpusolver.GPUSolver(codePath, GPUVendor)
+            self.availableSolvers["gpu"] = gpusolver.GPUSolver(codePath)
         except gpusolver.GPUSolverError:
             pass
 
@@ -99,23 +101,29 @@ class WorkProver(threading.Thread):
         self.statusUpdated(Status(self.solverName, status, self.speed, len(self.tasks), self.totalDifficulty))
 
     def setSolver(self, name, configuration):
-        if name is None and self.solverName is None:
+        try:
-            pass
+            if name is None and self.solverName is None:
-        elif name == self.solverName:
+                pass
-            self.solver.setConfiguration(configuration)
+            elif name == self.solverName:
-        else:
-            if self.solver is not None:
-                self.solver.setConfiguration(None)
-                self.solverName = None
-                self.solver = None
-
-            if name is not None:
-                if name not in self.availableSolvers:
-                    name, configuration = "dumb", None
-
-                self.solverName = name
-                self.solver = self.availableSolvers[name]
                 self.solver.setConfiguration(configuration)
+            else:
+                if self.solver is not None:
+                    self.solver.setConfiguration(None)
+                    self.solverName = None
+                    self.solver = None
+
+                if name is not None:
+                    if name not in self.availableSolvers:
+                        name, configuration = "dumb", None
+
+                    self.solverName = name
+                    self.solver = self.availableSolvers[name]
+                    self.solver.setConfiguration(configuration)
+        except GPUSolverError:
+            self.solverName = None
+            self.solver = None
+
+            self.resultsQueue.put(("GPUError", ))
 
         self.notifyStatus()
 
@@ -229,8 +237,9 @@ class WorkProver(threading.Thread):
         try:
             nonce, iterationsCount = self.solver.search(initialHash, task.target, appendedSeed, timeout)
         except gpusolver.GPUSolverError:
-            self.setSolver("dumb", 1)
+            self.setSolver(None, None)
-            self.availableSolvers.pop("gpu")
+
+            self.resultsQueue.put(("GPUError", ))
 
             nonce, iterationsCount = None, 0
 

src/workprover/fastsolver.py

@@ -37,6 +37,8 @@ def loadFastSolver(codePath):
         except:
             raise FastSolverError()
 
+# Only one instance allowed
+
 class FastSolver(object):
     def __init__(self, codePath):
         self.libfastsolver = loadFastSolver(codePath)

src/workprover/gpusolver.py

@@ -11,7 +11,7 @@ class GPUSolverError(Exception):
     pass
 
 class GPUSolver(object):
-    def __init__(self, codePath, vendor = None):
+    def __init__(self, codePath):
         global pyopencl
 
         try:
@@ -19,17 +19,15 @@ class GPUSolver(object):
         except ImportError:
             raise GPUSolverError()
 
-        for i in pyopencl.get_platforms():
+        self.vendors = {}
-            if vendor is not None and i.vendor != vendor:
-                continue
 
+        for i in pyopencl.get_platforms():
             devices = i.get_devices(device_type = pyopencl.device_type.GPU)
 
             if len(devices) != 0:
-                self.device = devices[0]
+                self.vendors[i.vendor] = devices[0]
 
-                break
+        if len(self.vendors) == 0:
-        else:
             raise GPUSolverError()
 
         with open(os.path.join(codePath, "gpusolver.cl")) as file:
@@ -88,14 +86,21 @@ class GPUSolver(object):
 
         import numpy
 
-        context = pyopencl.Context(devices = [self.device])
+        if configuration is None:
+            configuration = self.vendors.keys()[0]
 
-        computeUnitsCount = self.device.get_info(pyopencl.device_info.MAX_COMPUTE_UNITS)
+        if configuration not in self.vendors:
-        workGroupSize = self.device.get_info(pyopencl.device_info.MAX_WORK_GROUP_SIZE)
+            raise GPUSolverError()
+
+        device = self.vendors[configuration]
+        context = pyopencl.Context(devices = [device])
+
+        computeUnitsCount = device.get_info(pyopencl.device_info.MAX_COMPUTE_UNITS)
+        workGroupSize = device.get_info(pyopencl.device_info.MAX_WORK_GROUP_SIZE)
 
         self.batchSize = workGroupSize * computeUnitsCount * 256
 
-        self.queue = pyopencl.CommandQueue(context, self.device)
+        self.queue = pyopencl.CommandQueue(context, device)
 
         program = pyopencl.Program(context, self.source).build()
 

src/workprover/test.py

@@ -122,7 +122,7 @@ class TestGPUSolver(TestSolver):
 
 class TestWorkProver(unittest.TestCase):
     def setUp(self):
-        self.thread = __init__.WorkProver(codePath, None, seed, None, None)
+        self.thread = __init__.WorkProver(codePath, seed, None, None)
         self.thread.start()
 
     def checkTaskLinks(self):