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add assert to validate number of global threads

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check that the number of global threads is a multiple of the workgroup size
This commit is contained in:
psychocrypt
2017-10-05 22:22:30 +02:00
parent 0304a7b09e
commit 65d47dbb31
1 changed files with 5 additions and 0 deletions
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xmrstak/backend/amd/amd_gpu/gpu.cpp
+5
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@@ -20,6 +20,7 @@
#include <vector>
#include <algorithm>
#include <regex>
#include <cassert>
#ifdef _WIN32
#include <windows.h>
@@ -807,6 +808,8 @@ size_t XMRRunJob(GpuContext* ctx, cl_uint* HashOutput)
size_t w_size = ctx->workSize;
// round up to next multiple of w_size
size_t g_thd = ((g_intensity + w_size - 1u) / w_size) * w_size;
// number of global threads must be a multiple of the work group size (w_size)
assert(g_thd%w_size == 0);
for(int i = 2; i < 6; ++i)
{
@@ -892,6 +895,8 @@ size_t XMRRunJob(GpuContext* ctx, cl_uint* HashOutput)
// round up to next multiple of w_size
BranchNonces[i] = ((BranchNonces[i] + w_size - 1u) / w_size) * w_size;
// number of global threads must be a multiple of the work group size (w_size)
assert(BranchNonces%w_size == 0);
if((ret = clEnqueueNDRangeKernel(ctx->CommandQueues, ctx->Kernels[i + 3], 1, &ctx->Nonce, BranchNonces + i, &w_size, 0, NULL, NULL)) != CL_SUCCESS)
{
printer::inst()->print_msg(L1,"Error %s when calling clEnqueueNDRangeKernel for kernel %d.", err_to_str(ret), i + 3);