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Limit evaluate available memory check to nvidia runtime

This commit is contained in:
jsteube 2018-08-06 10:16:29 +02:00
parent 86fc587182
commit f9b13035f2
1 changed files with 48 additions and 43 deletions
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91
src/opencl.c
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@ -4261,69 +4261,74 @@ int opencl_session_begin (hashcat_ctx_t *hashcat_ctx)
if (CL_rc == -1) return -1;
// OK, so the problem here is the following:
// There's just CL_DEVICE_GLOBAL_MEM_SIZE to ask OpenCL about the total memory on the device,
// but there's no way to ask for available memory on the device.
// In combination, most OpenCL runtimes implementation of clCreateBuffer()
// are doing so called lazy memory allocation on the device.
// Now, if the user has X11 (or a game or anything that takes a lot of GPU memory)
// running on the host we end up with an error type of this:
// clEnqueueNDRangeKernel(): CL_MEM_OBJECT_ALLOCATION_FAILURE
// The clEnqueueNDRangeKernel() is because of the lazy allocation
// The best way to workaround this problem is if we would be able to ask for available memory,
// The idea here is to try to evaluate available memory by allocating it till it errors
// device_available_mem
#define MAX_ALLOC_CHECKS_CNT 8192
#define MAX_ALLOC_CHECKS_SIZE (64 * 1024 * 1024)
cl_mem *tmp_device = (cl_mem *) hccalloc (MAX_ALLOC_CHECKS_CNT, sizeof (cl_mem));
device_param->device_available_mem = device_param->device_global_mem - MAX_ALLOC_CHECKS_SIZE;
char *tmp_host = (char *) hcmalloc (MAX_ALLOC_CHECKS_SIZE);
u64 c;
for (c = 0; c < MAX_ALLOC_CHECKS_CNT; c++)
if (device_param->platform_vendor_id == VENDOR_ID_NV)
{
if (((c + 1) * MAX_ALLOC_CHECKS_SIZE) >= device_param->device_global_mem) break;
// OK, so the problem here is the following:
// There's just CL_DEVICE_GLOBAL_MEM_SIZE to ask OpenCL about the total memory on the device,
// but there's no way to ask for available memory on the device.
// In combination, most OpenCL runtimes implementation of clCreateBuffer()
// are doing so called lazy memory allocation on the device.
// Now, if the user has X11 (or a game or anything that takes a lot of GPU memory)
// running on the host we end up with an error type of this:
// clEnqueueNDRangeKernel(): CL_MEM_OBJECT_ALLOCATION_FAILURE
// The clEnqueueNDRangeKernel() is because of the lazy allocation
// The best way to workaround this problem is if we would be able to ask for available memory,
// The idea here is to try to evaluate available memory by allocating it till it errors
cl_int CL_err;
cl_mem *tmp_device = (cl_mem *) hccalloc (MAX_ALLOC_CHECKS_CNT, sizeof (cl_mem));
OCL_PTR *ocl = opencl_ctx->ocl;
char *tmp_host = (char *) hcmalloc (MAX_ALLOC_CHECKS_SIZE);
tmp_device[c] = ocl->clCreateBuffer (device_param->context, CL_MEM_READ_ONLY, MAX_ALLOC_CHECKS_SIZE, NULL, &CL_err);
u64 c;
if (CL_err != CL_SUCCESS)
for (c = 0; c < MAX_ALLOC_CHECKS_CNT; c++)
{
c--;
if (((c + 1 + 1) * MAX_ALLOC_CHECKS_SIZE) >= device_param->device_global_mem) break;
break;
cl_int CL_err;
OCL_PTR *ocl = opencl_ctx->ocl;
tmp_device[c] = ocl->clCreateBuffer (device_param->context, CL_MEM_READ_WRITE, MAX_ALLOC_CHECKS_SIZE, NULL, &CL_err);
if (CL_err != CL_SUCCESS) break;
CL_err = ocl->clEnqueueReadBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, 0, MAX_ALLOC_CHECKS_SIZE, 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);
if (CL_err != CL_SUCCESS) break;
}
CL_err = ocl->clEnqueueReadBuffer (device_param->command_queue, tmp_device[c], CL_TRUE, 0, MAX_ALLOC_CHECKS_SIZE, tmp_host, 0, NULL, NULL);
if (c >= 1) c--;
if (CL_err != CL_SUCCESS)
device_param->device_available_mem = c * MAX_ALLOC_CHECKS_SIZE;
// clean up
u64 r;
for (r = 0; r < c; r++)
{
c--;
CL_rc = hc_clReleaseMemObject (hashcat_ctx, tmp_device[r]);
break;
if (CL_rc == -1) return -1;
}
hcfree (tmp_host);
hcfree (tmp_device);
}
u64 r;
for (r = 0; r < c; r++)
{
CL_rc = hc_clReleaseMemObject (hashcat_ctx, tmp_device[r]);
if (CL_rc == -1) return -1;
}
hcfree (tmp_host);
hcfree (tmp_device);
device_param->device_available_mem = c * MAX_ALLOC_CHECKS_SIZE;
/**
* create input buffers on device : calculate size of fixed memory buffers
*/