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OpenCL fixes

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- directory change
- automatically detect all available GPUs
This commit is contained in:
mailchuck 2015-11-08 11:23:41 +01:00 committed by Peter Surda
parent 53ca944483
commit 5a681068fe
1 changed files with 11 additions and 5 deletions
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16
src/openclpow.py
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@ -13,15 +13,21 @@ try:
import numpy import numpy
import pyopencl as cl import pyopencl as cl
hash_dt = numpy.dtype([('target', numpy.uint64), ('v', numpy.str_, 73)]) hash_dt = numpy.dtype([('target', numpy.uint64), ('v', numpy.str_, 73)])
if (len(cl.get_platforms()) > 0): gpus = []
ctx = cl.create_some_context() for platform in cl.get_platforms():
gpus.extend(platform.get_devices(device_type=cl.device_type.GPU))
if (len(gpus) > 0):
ctx = cl.Context(devices=gpus)
queue = cl.CommandQueue(ctx) queue = cl.CommandQueue(ctx)
full_path = os.path.dirname(os.path.realpath(__file__)) full_path = os.path.dirname(os.path.realpath(__file__))
f = open(os.path.join(full_path, 'kernel.cl'), 'r') f = open(os.path.join(full_path, "bitmsghash", 'bitmsghash.cl'), 'r')
fstr = ''.join(f.readlines()) fstr = ''.join(f.readlines())
program = cl.Program(ctx, fstr).build(options="") program = cl.Program(ctx, fstr).build(options="")
else:
print "No OpenCL GPUs found"
ctx = False
except Exception as e: except Exception as e:
print "opencl fail:" + str(e) print "opencl fail: " + str(e)
ctx = False ctx = False
def has_opencl(): def has_opencl():
@ -40,7 +46,7 @@ def do_opencl_pow(hash, target):
dest_buf = cl.Buffer(ctx, cl.mem_flags.WRITE_ONLY, output.nbytes) dest_buf = cl.Buffer(ctx, cl.mem_flags.WRITE_ONLY, output.nbytes)
kernel = program.kernel_sha512 kernel = program.kernel_sha512
worksize = kernel.get_work_group_info(cl.kernel_work_group_info.WORK_GROUP_SIZE, cl.get_platforms()[0].get_devices()[1]) worksize = kernel.get_work_group_info(cl.kernel_work_group_info.WORK_GROUP_SIZE, gpus[0])
kernel.set_arg(0, hash_buf) kernel.set_arg(0, hash_buf)
kernel.set_arg(1, dest_buf) kernel.set_arg(1, dest_buf)