diff options
Diffstat (limited to 'gdr_test.cu')
| -rw-r--r-- | gdr_test.cu | 48 |
1 files changed, 28 insertions, 20 deletions
diff --git a/gdr_test.cu b/gdr_test.cu index cc624fc..d0118d5 100644 --- a/gdr_test.cu +++ b/gdr_test.cu @@ -93,11 +93,11 @@ int main(int argc, char *argv[]) { char gpu_name[30] = {0}; initAssert (cuDeviceGetName (gpu_name, 30, current_gpu)); - printf("GPU %i: %s\n", num_gpus, gpu_name); + printf(" GPU %i: %s\n", num_gpus, gpu_name); if (strncmp (gpu_name, "Tesla K40", 9) == 0) { - printf ("Found a Tesla GPU! I'll use that one.\n"); + printf (" Found a Tesla GPU! I'll use that one.\n"); gpu = current_gpu; break; } @@ -112,12 +112,12 @@ int main(int argc, char *argv[]) { //(see https://www.cs.cmu.edu/afs/cs/academic/class/15668-s11/www/cuda-doc/html/group__CUDART__DRIVER.html) unsigned int api_version; initAssert (cuCtxGetApiVersion (context, &api_version)); - printf ("CUDA API Version: %u\n", api_version); - printf ("CUDA init done\n\n"); + printf (" CUDA API Version: %u\n", api_version); + //printf ("CUDA init done\n\n"); CUdevprop gpu_props; initAssert(cuDeviceGetProperties(&gpu_props, gpu)); - printf ("Clock %lu KHz\n", gpu_props.clockRate); + printf (" GPU Clock %lu KHz\n", gpu_props.clockRate); CUdeviceptr d_A, d_D; initAssert(cuMemAlloc(&d_D, GPU_PAGE)); // Should be multiple of GPU page, or mapping of next allocation will segfault the gdrcopy module @@ -149,7 +149,7 @@ int main(int argc, char *argv[]) { int A_bar_off = A_info.va - d_A; volatile uint32_t *A = (uint32_t *)((char *)A_bar_ptr + A_bar_off); - printf("DevicePtr: %lx, GDR ptr: %p, Bus ptr: %lx, (Bar: %p, Offset: %i), VA: 0x%lx, Size: %lu, Page: %lu\n", d_A, A, A_info.bus_addr, A_bar_ptr, A_bar_off, A_info.va, A_info.mapped_size, A_info.page_size); + printf("\nDevicePtr: %lx, GDR ptr: %p, Bus ptr: %lx, (Bar: %p, Offset: %i), VA: 0x%lx, Size: %lu\n", d_A, A, A_info.bus_addr, A_bar_ptr, A_bar_off, A_info.va, A_info.mapped_size); pcilib_t *pci; volatile void *bar; @@ -166,7 +166,7 @@ int main(int argc, char *argv[]) { printf("map bar\n"); exit(1); } - printf("BAR mapped to: %p\n", bar); + //printf("BAR mapped to: %p\n", bar); CUdeviceptr dBAR; // initAssert (cuMemHostRegister ((void*)((((uintptr_t)bar)/65536)*65536), 65536, CU_MEMHOSTREGISTER_DEVICEMAP)); @@ -176,7 +176,7 @@ int main(int argc, char *argv[]) { //initAssert (cuPointerSetAttribute(&flag, CU_POINTER_ATTRIBUTE_SYNC_MEMOPS, dBAR)); bar_info = pcilib_get_bar_info(pci, BAR); - printf("%p (Phys: 0x%lx, Size: 0x%x)\n", bar_info[BAR].virt_addr, bar_info[BAR].phys_addr, bar_info[BAR].size); + printf("Bar: %p (Phys: 0x%lx, Size: 0x%x)\n", bar_info[BAR].virt_addr, bar_info[BAR].phys_addr, bar_info[BAR].size); pcilib_kmem_handle_t *kdesc_kmem = pcilib_alloc_kernel_memory (pci, PCILIB_KMEM_TYPE_CONSISTENT, 1, 128, 4096, KMEM_USE_RING, KMEM_DEFAULT_FLAGS); uintptr_t kdesc_bus = pcilib_kmem_get_block_ba (pci, kdesc_kmem, 0); @@ -196,6 +196,7 @@ int main(int argc, char *argv[]) { uintptr_t desc_bus = kdesc_bus; #endif + printf("\nSize: %lu bytes (%lu %lu-byte descriptors with packet length set to %lu), GPU itertions: %lu, Iterations: %lu\n", SIZE, NUM_PAGES, PAGE_SIZE, TLP_SIZE, GPU_ITERS, ITERS); memset ((uint32_t *)desc, 0, 5 * sizeof (uint32_t)); volatile uint64_t *hwaddr = (uint64_t*)((char*)desc + 2 * sizeof(uint32_t)); @@ -205,16 +206,22 @@ int main(int argc, char *argv[]) { WR32 (REG_RESET_DMA, 0); usleep (100000); - WR32 (REG_NUM_PACKETS_PER_DESCRIPTOR, PAGE_SIZE / (4 * TLP_SIZE)); - WR32 (REG_PACKET_LENGTH, 0x80000 | TLP_SIZE); - WR32 (REG_UPDATE_THRESHOLD, 0); - WR64 (REG_UPDATE_ADDRESS, desc_bus); - WR32 (REG_DMA, 1); - WR32 (REG_INTERCONNECT, 0x232); - WR32 (REG_COUNTER, 1); + WR32_sleep (REG_NUM_PACKETS_PER_DESCRIPTOR, PAGE_SIZE / (4 * TLP_SIZE)); + WR32_sleep (REG_PACKET_LENGTH, 0x80000 | TLP_SIZE); + WR32_sleep (REG_UPDATE_THRESHOLD, 1); + WR64_sleep (REG_UPDATE_COUNTER, desc_bus); + WR64_sleep (REG_UPDATE_ADDRESS, desc_bus + DESCRIPTOR_OFFSET); + WR32_sleep (REG_DMA, 1); + WR32_sleep (REG_INTERCONNECT, 0x232); + WR32_sleep (REG_COUNTER, 1); + + usleep(100000); #ifdef VERBOSE - struct timespec tss, tse, tsk; + struct timespec tss, tsk; +# ifndef GPU_DESC + struct timespec tse; +# endif #else struct timeval tvs, tve; #endif /* VERBOSE */ @@ -223,7 +230,7 @@ int main(int argc, char *argv[]) { clock_gettime(CLOCK_REALTIME, &tss); #ifdef GPU_DESC - ipedma<<<1, 1>>>((void*)dBAR, A_info.bus_addr, (uint64_t*)d_D, (uint32_t*)d_A); + ipedma<<<1, 1>>>((void*)dBAR, A_info.bus_addr, (uint32_t*)d_D, (uint64_t*)(d_D + DESCRIPTOR_OFFSET), (uint32_t*)d_A); #else WR64 (REG_DESCRIPTOR_ADDRESS, A_info.bus_addr); // WR64 (REG_DESCRIPTOR_ADDRESS, kbuf_bus); @@ -234,7 +241,8 @@ int main(int argc, char *argv[]) { null<<<1, 1>>>((uint32_t*)d_A); #endif - cudaDeviceSynchronize(); + err = cudaDeviceSynchronize(); + if (err) printf("Oopps, synchronization error %i", err); clock_gettime(CLOCK_REALTIME, &tsk); @@ -246,7 +254,7 @@ int main(int argc, char *argv[]) { # ifdef GPU_DESC double lat = 1000. * kbuf[0] / gpu_props.clockRate; double latk = 1000. * kbuf[1] / gpu_props.clockRate; - double latc = ((tsk.tv_sec - tss.tv_sec)*1000000 + 1. * (tsk.tv_nsec - tss.tv_nsec) / 1000.) / GPU_ITERS; + double latc = ((tsk.tv_sec - tss.tv_sec)*1000000. + 1. * (tsk.tv_nsec - tss.tv_nsec) / 1000.) / GPU_ITERS; # ifdef USE_HW_CONTER double lath = 4. * RD32 (0x20) / 1000; # else @@ -288,7 +296,7 @@ int main(int argc, char *argv[]) { pcilib_free_kernel_memory(pci, kdesc_kmem, KMEM_DEFAULT_FLAGS); pcilib_close(pci); - printf("PCI closed\n"); + printf("\nPCI closed\n"); gdr_unmap(g, A_mh, A_bar_ptr, PAGE_SIZE); |