| 42 | cl_uint checksum; |
| 43 | |
| 44 | test_status init_cl(cl_device_id device) |
| 45 | { |
| 46 | int error; |
| 47 | |
| 48 | g_max_individual_allocation_size = |
| 49 | get_device_info_max_mem_alloc_size(device); |
| 50 | g_global_mem_size = get_device_info_global_mem_size(device); |
| 51 | |
| 52 | log_info("Device reports CL_DEVICE_MAX_MEM_ALLOC_SIZE=%llu bytes (%gMB), " |
| 53 | "CL_DEVICE_GLOBAL_MEM_SIZE=%llu bytes (%gMB).\n", |
| 54 | llu(g_max_individual_allocation_size), |
| 55 | toMB(g_max_individual_allocation_size), llu(g_global_mem_size), |
| 56 | toMB(g_global_mem_size)); |
| 57 | |
| 58 | if (g_global_mem_size > (cl_ulong)SIZE_MAX) |
| 59 | { |
| 60 | g_global_mem_size = (cl_ulong)SIZE_MAX; |
| 61 | } |
| 62 | |
| 63 | if (g_max_individual_allocation_size > g_global_mem_size) |
| 64 | { |
| 65 | log_error("FAILURE: CL_DEVICE_MAX_MEM_ALLOC_SIZE (%llu) is greater " |
| 66 | "than the CL_DEVICE_GLOBAL_MEM_SIZE (%llu)\n", |
| 67 | llu(g_max_individual_allocation_size), |
| 68 | llu(g_global_mem_size)); |
| 69 | return TEST_FAIL; |
| 70 | } |
| 71 | |
| 72 | // We may need to back off the global_mem_size on unified memory devices to |
| 73 | // leave room for application and operating system code and associated data |
| 74 | // in the working set, so we dont start pathologically paging. Check to see |
| 75 | // if we are a unified memory device |
| 76 | cl_bool hasUnifiedMemory = CL_FALSE; |
| 77 | if ((error = clGetDeviceInfo(device, CL_DEVICE_HOST_UNIFIED_MEMORY, |
| 78 | sizeof(hasUnifiedMemory), &hasUnifiedMemory, |
| 79 | NULL))) |
| 80 | { |
| 81 | print_error(error, |
| 82 | "clGetDeviceInfo failed for CL_DEVICE_HOST_UNIFIED_MEMORY"); |
| 83 | return TEST_FAIL; |
| 84 | } |
| 85 | // we share unified memory so back off to 1/2 the global memory size. |
| 86 | if (CL_TRUE == hasUnifiedMemory) |
| 87 | { |
| 88 | g_global_mem_size -= g_global_mem_size / 2; |
| 89 | log_info( |
| 90 | "Device shares memory with the host, so backing off the maximum " |
| 91 | "combined allocation size to be %gMB to avoid rampant paging.\n", |
| 92 | toMB(g_global_mem_size)); |
| 93 | } |
| 94 | else |
| 95 | { |
| 96 | // Lets just use 60% of total available memory as framework/driver may |
| 97 | // not allow using all of it e.g. vram on GPU is used by window server |
| 98 | // and even for this test, we need some space for context, queue, kernel |
| 99 | // code on GPU. |
| 100 | g_global_mem_size *= 0.60; |
| 101 | } |
nothing calls this directly
no test coverage detected