Bitmessage/PyBitmessage-2024-12-03
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openclpow quality fixes

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lakshyacis 2019-10-22 19:53:23 +05:30
parent 1181db66e0
commit cacac00e21
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GPG Key ID: D2C539C8EC63E9EB
1 changed files with 30 additions and 23 deletions
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49
src/openclpow.py
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@ -1,8 +1,9 @@
#!/usr/bin/env python2.7
"""
Module for Proof of Work using OpenCL
"""
from struct import pack, unpack
import time
import hashlib
import random
import os
from bmconfigparser import BMConfigParser
@ -27,6 +28,8 @@ except ImportError:
def initCL():
"""Initlialise OpenCL engine"""
# pylint: disable=global-statement
global ctx, queue, program, hash_dt, libAvailable
if libAvailable is False:
return
@ -40,12 +43,13 @@ def initCL():
for platform in cl.get_platforms():
gpus.extend(platform.get_devices(device_type=cl.device_type.GPU))
if BMConfigParser().safeGet("bitmessagesettings", "opencl") == platform.vendor:
enabledGpus.extend(platform.get_devices(device_type=cl.device_type.GPU))
enabledGpus.extend(platform.get_devices(
device_type=cl.device_type.GPU))
if platform.vendor not in vendors:
vendors.append(platform.vendor)
except:
pass
if (len(enabledGpus) > 0):
if enabledGpus:
ctx = cl.Context(devices=enabledGpus)
queue = cl.CommandQueue(ctx)
f = open(os.path.join(paths.codePath(), "bitmsghash", 'bitmsghash.cl'), 'r')
@ -55,23 +59,29 @@ def initCL():
else:
logger.info("No OpenCL GPUs found")
del enabledGpus[:]
except Exception as e:
except Exception:
logger.error("OpenCL fail: ", exc_info=True)
del enabledGpus[:]
def openclAvailable():
return (len(gpus) > 0)
"""Are there any OpenCL GPUs available?"""
return bool(gpus)
def openclEnabled():
return (len(enabledGpus) > 0)
"""Is OpenCL enabled (and available)?"""
return bool(enabledGpus)
def do_opencl_pow(hash, target):
def do_opencl_pow(hash_, target):
"""Perform PoW using OpenCL"""
output = numpy.zeros(1, dtype=[('v', numpy.uint64, 1)])
if (len(enabledGpus) == 0):
if not enabledGpus:
return output[0][0]
data = numpy.zeros(1, dtype=hash_dt, order='C')
data[0]['v'] = ("0000000000000000" + hash).decode("hex")
data[0]['v'] = ("0000000000000000" + hash_).decode("hex")
data[0]['target'] = target
hash_buf = cl.Buffer(ctx, cl.mem_flags.READ_ONLY | cl.mem_flags.COPY_HOST_PTR, hostbuf=data)
@ -83,7 +93,6 @@ def do_opencl_pow(hash, target):
kernel.set_arg(0, hash_buf)
kernel.set_arg(1, dest_buf)
start = time.time()
progress = 0
globamt = worksize * 2000
@ -96,20 +105,18 @@ def do_opencl_pow(hash, target):
cl.enqueue_copy(queue, output, dest_buf)
queue.finish()
progress += globamt
sofar = time.time() - start
# logger.debug("Working for %.3fs, %.2f Mh/s", sofar, (progress / sofar) / 1000000)
if shutdown != 0:
raise Exception("Interrupted")
taken = time.time() - start
# logger.debug("Took %d tries.", progress)
return output[0][0]
#initCL()
if __name__ == "__main__":
target = 54227212183L
initialHash = "3758f55b5a8d902fd3597e4ce6a2d3f23daff735f65d9698c270987f4e67ad590b93f3ffeba0ef2fd08a8dc2f87b68ae5a0dc819ab57f22ad2c4c9c8618a43b3".decode("hex")
nonce = do_opencl_pow(initialHash.encode("hex"), target)
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
print "{} - value {} < {}".format(nonce, trialValue, target)
initCL()
target_ = 54227212183
initialHash = ("3758f55b5a8d902fd3597e4ce6a2d3f23daff735f65d9698c270987f4e67ad590"
"b93f3ffeba0ef2fd08a8dc2f87b68ae5a0dc819ab57f22ad2c4c9c8618a43b3").decode("hex")
nonce = do_opencl_pow(initialHash.encode("hex"), target_)
trialValue, = unpack(
'>Q', hashlib.sha512(hashlib.sha512(pack('>Q', nonce) + initialHash).digest()).digest()[0:8])
print "{} - value {} < {}".format(nonce, trialValue, target_)