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Code Issues Releases Wiki Activity

Transfer only a few byte should be enough to force the runtime to actually allocate the memory

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This commit is contained in:
jsteube 2018-08-06 14:46:52 +02:00
parent 242d991def
commit 9f54c3dd14
1 changed files with 22 additions and 11 deletions
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33
src/opencl.c
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@ -4284,8 +4284,6 @@ int opencl_session_begin (hashcat_ctx_t *hashcat_ctx)
cl_mem *tmp_device = (cl_mem *) hccalloc (MAX_ALLOC_CHECKS_CNT, sizeof (cl_mem));
char *tmp_host = (char *) hcmalloc (MAX_ALLOC_CHECKS_SIZE);
u64 c;
for (c = 0; c < MAX_ALLOC_CHECKS_CNT; c++)
@ -4305,11 +4303,23 @@ int opencl_session_begin (hashcat_ctx_t *hashcat_ctx)
break;
}
CL_err = ocl->clEnqueueReadBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, 0, MAX_ALLOC_CHECKS_SIZE, tmp_host, 0, NULL, NULL);
// transfer only a few byte should be enough to force the runtime to actually allocate the memory
u8 tmp_host[8];
CL_err = ocl->clEnqueueReadBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, 0, sizeof (tmp_host), tmp_host, 0, NULL, NULL);
if (CL_err != CL_SUCCESS) break;
CL_err = ocl->clEnqueueWriteBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, 0, MAX_ALLOC_CHECKS_SIZE, tmp_host, 0, NULL, NULL);
CL_err = ocl->clEnqueueWriteBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, 0, sizeof (tmp_host), tmp_host, 0, NULL, NULL);
if (CL_err != CL_SUCCESS) break;
CL_err = ocl->clEnqueueReadBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, MAX_ALLOC_CHECKS_SIZE - sizeof (tmp_host), sizeof (tmp_host), tmp_host, 0, NULL, NULL);
if (CL_err != CL_SUCCESS) break;
CL_err = ocl->clEnqueueWriteBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, MAX_ALLOC_CHECKS_SIZE - sizeof (tmp_host), sizeof (tmp_host), tmp_host, 0, NULL, NULL);
if (CL_err != CL_SUCCESS) break;
}
@ -4318,17 +4328,18 @@ int opencl_session_begin (hashcat_ctx_t *hashcat_ctx)
// clean up
u64 r;
for (r = 0; r < c; r++)
for (c = 0; c < MAX_ALLOC_CHECKS_CNT; c++)
{
CL_rc = hc_clReleaseMemObject (hashcat_ctx, tmp_device[r]);
if (((c + 1 + 1) * MAX_ALLOC_CHECKS_SIZE) >= device_param->device_global_mem) break;
if (CL_rc == -1) return -1;
if (tmp_device[c] != NULL)
{
CL_rc = hc_clReleaseMemObject (hashcat_ctx, tmp_device[c]);
if (CL_rc == -1) return -1;
}
}
hcfree (tmp_host);
hcfree (tmp_device);
}