| 1 | /* |
| 2 | * Copyright (c)2020 System Fabric Works, Inc. All Rights Reserved. |
| 3 | * mailto:info@systemfabricworks.com |
| 4 | * |
| 5 | * License: GPLv2, see COPYING. |
| 6 | * |
| 7 | * libcufile engine |
| 8 | * |
| 9 | * fio I/O engine using the NVIDIA cuFile API. |
| 10 | * |
| 11 | */ |
| 12 | |
| 13 | #include <stdlib.h> |
| 14 | #include <unistd.h> |
| 15 | #include <errno.h> |
| 16 | #include <string.h> |
| 17 | #include <sys/time.h> |
| 18 | #include <sys/resource.h> |
| 19 | #include <cufile.h> |
| 20 | #include <cuda.h> |
| 21 | #include <cuda_runtime.h> |
| 22 | #include <pthread.h> |
| 23 | |
| 24 | #include "../fio.h" |
| 25 | #include "../lib/pow2.h" |
| 26 | #include "../optgroup.h" |
| 27 | #include "../lib/memalign.h" |
| 28 | |
| 29 | #define ALIGNED_4KB(v) (((v) & 0x0fff) == 0) |
| 30 | |
| 31 | #define LOGGED_BUFLEN_NOT_ALIGNED 0x01 |
| 32 | #define LOGGED_GPU_OFFSET_NOT_ALIGNED 0x02 |
| 33 | #define GPU_ID_SEP ":" |
| 34 | |
| 35 | enum { |
| 36 | IO_CUFILE = 1, |
| 37 | IO_POSIX = 2 |
| 38 | }; |
| 39 | |
| 40 | struct libcufile_options { |
| 41 | struct thread_data *td; |
| 42 | char *gpu_ids; /* colon-separated list of GPU ids, |
| 43 | one per job */ |
| 44 | void *cu_mem_ptr; /* GPU memory */ |
| 45 | void *junk_buf; /* buffer to simulate cudaMemcpy with |
| 46 | posix I/O write */ |
| 47 | int my_gpu_id; /* GPU id to use for this job */ |
| 48 | unsigned int cuda_io; /* Type of I/O to use with CUDA */ |
| 49 | size_t total_mem; /* size for cu_mem_ptr and junk_buf */ |
| 50 | int logged; /* bitmask of log messages that have |
| 51 | been output, prevent flood */ |
| 52 | }; |
| 53 | |
| 54 | struct fio_libcufile_data { |
| 55 | CUfileDescr_t cf_descr; |
| 56 | CUfileHandle_t cf_handle; |
| 57 | }; |
| 58 | |
| 59 | static struct fio_option options[] = { |
| 60 | { |
| 61 | .name = "gpu_dev_ids", |
| 62 | .lname = "libcufile engine gpu dev ids", |
| 63 | .type = FIO_OPT_STR_STORE, |
| 64 | .off1 = offsetof(struct libcufile_options, gpu_ids), |
| 65 | .help = "GPU IDs, one per subjob, separated by " GPU_ID_SEP, |
| 66 | .category = FIO_OPT_C_ENGINE, |
| 67 | .group = FIO_OPT_G_LIBCUFILE, |
| 68 | }, |
| 69 | { |
| 70 | .name = "cuda_io", |
| 71 | .lname = "libcufile cuda io", |
| 72 | .type = FIO_OPT_STR, |
| 73 | .off1 = offsetof(struct libcufile_options, cuda_io), |
| 74 | .help = "Type of I/O to use with CUDA", |
| 75 | .def = "cufile", |
| 76 | .posval = { |
| 77 | { .ival = "cufile", |
| 78 | .oval = IO_CUFILE, |
| 79 | .help = "libcufile nvidia-fs" |
| 80 | }, |
| 81 | { .ival = "posix", |
| 82 | .oval = IO_POSIX, |
| 83 | .help = "POSIX I/O" |
| 84 | } |
| 85 | }, |
| 86 | .category = FIO_OPT_C_ENGINE, |
| 87 | .group = FIO_OPT_G_LIBCUFILE, |
| 88 | }, |
| 89 | { |
| 90 | .name = NULL, |
| 91 | }, |
| 92 | }; |
| 93 | |
| 94 | static int running = 0; |
| 95 | static int cufile_initialized = 0; |
| 96 | static pthread_mutex_t running_lock = PTHREAD_MUTEX_INITIALIZER; |
| 97 | |
| 98 | #define check_cudaruntimecall(fn, rc) \ |
| 99 | do { \ |
| 100 | cudaError_t res = fn; \ |
| 101 | if (res != cudaSuccess) { \ |
| 102 | const char *str = cudaGetErrorName(res); \ |
| 103 | log_err("cuda runtime api call failed %s:%d : err=%d:%s\n", \ |
| 104 | #fn, __LINE__, res, str); \ |
| 105 | rc = -1; \ |
| 106 | } else \ |
| 107 | rc = 0; \ |
| 108 | } while(0) |
| 109 | |
| 110 | static const char *fio_libcufile_get_cuda_error(CUfileError_t st) |
| 111 | { |
| 112 | if (IS_CUFILE_ERR(st.err)) |
| 113 | return cufileop_status_error(st.err); |
| 114 | return "unknown"; |
| 115 | } |
| 116 | |
| 117 | /* |
| 118 | * Assign GPU to subjob roundrobin, similar to how multiple |
| 119 | * entries in 'directory' are handled by fio. |
| 120 | */ |
| 121 | static int fio_libcufile_find_gpu_id(struct thread_data *td) |
| 122 | { |
| 123 | struct libcufile_options *o = td->eo; |
| 124 | int gpu_id = 0; |
| 125 | |
| 126 | if (o->gpu_ids != NULL) { |
| 127 | char *gpu_ids, *pos, *cur; |
| 128 | int i, id_count, gpu_idx; |
| 129 | |
| 130 | for (id_count = 0, cur = o->gpu_ids; cur != NULL; id_count++) { |
| 131 | cur = strchr(cur, GPU_ID_SEP[0]); |
| 132 | if (cur != NULL) |
| 133 | cur++; |
| 134 | } |
| 135 | |
| 136 | gpu_idx = td->subjob_number % id_count; |
| 137 | |
| 138 | pos = gpu_ids = strdup(o->gpu_ids); |
| 139 | if (gpu_ids == NULL) { |
| 140 | log_err("strdup(gpu_ids): err=%d\n", errno); |
| 141 | return -1; |
| 142 | } |
| 143 | |
| 144 | i = 0; |
| 145 | while (pos != NULL && i <= gpu_idx) { |
| 146 | i++; |
| 147 | cur = strsep(&pos, GPU_ID_SEP); |
| 148 | } |
| 149 | |
| 150 | if (cur) |
| 151 | gpu_id = atoi(cur); |
| 152 | |
| 153 | free(gpu_ids); |
| 154 | } |
| 155 | |
| 156 | return gpu_id; |
| 157 | } |
| 158 | |
| 159 | static int fio_libcufile_init(struct thread_data *td) |
| 160 | { |
| 161 | struct libcufile_options *o = td->eo; |
| 162 | CUfileError_t status; |
| 163 | int initialized; |
| 164 | int rc; |
| 165 | |
| 166 | pthread_mutex_lock(&running_lock); |
| 167 | if (running == 0) { |
| 168 | assert(cufile_initialized == 0); |
| 169 | if (o->cuda_io == IO_CUFILE) { |
| 170 | /* only open the driver if this is the first worker thread */ |
| 171 | status = cuFileDriverOpen(); |
| 172 | if (status.err != CU_FILE_SUCCESS) |
| 173 | log_err("cuFileDriverOpen: err=%d:%s\n", status.err, |
| 174 | fio_libcufile_get_cuda_error(status)); |
| 175 | else |
| 176 | cufile_initialized = 1; |
| 177 | } |
| 178 | } |
| 179 | running++; |
| 180 | initialized = cufile_initialized; |
| 181 | pthread_mutex_unlock(&running_lock); |
| 182 | |
| 183 | if (o->cuda_io == IO_CUFILE && !initialized) |
| 184 | return 1; |
| 185 | |
| 186 | o->my_gpu_id = fio_libcufile_find_gpu_id(td); |
| 187 | if (o->my_gpu_id < 0) |
| 188 | return 1; |
| 189 | |
| 190 | dprint(FD_MEM, "Subjob %d uses GPU %d\n", td->subjob_number, o->my_gpu_id); |
| 191 | check_cudaruntimecall(cudaSetDevice(o->my_gpu_id), rc); |
| 192 | if (rc != 0) |
| 193 | return 1; |
| 194 | |
| 195 | return 0; |
| 196 | } |
| 197 | |
| 198 | static inline int fio_libcufile_pre_write(struct thread_data *td, |
| 199 | struct libcufile_options *o, |
| 200 | struct io_u *io_u, |
| 201 | size_t gpu_offset) |
| 202 | { |
| 203 | int rc = 0; |
| 204 | |
| 205 | if (o->cuda_io == IO_CUFILE) { |
| 206 | if (td->o.verify) { |
| 207 | /* |
| 208 | Data is being verified, copy the io_u buffer to GPU memory. |
| 209 | This isn't done in the non-verify case because the data would |
| 210 | already be in GPU memory in a normal cuFile application. |
| 211 | */ |
| 212 | check_cudaruntimecall(cudaMemcpy(((char*) o->cu_mem_ptr) + gpu_offset, |
| 213 | io_u->xfer_buf, |
| 214 | io_u->xfer_buflen, |
| 215 | cudaMemcpyHostToDevice), rc); |
| 216 | if (rc != 0) { |
| 217 | log_err("DDIR_WRITE cudaMemcpy H2D failed\n"); |
| 218 | io_u->error = EIO; |
| 219 | } |
| 220 | } |
| 221 | } else if (o->cuda_io == IO_POSIX) { |
| 222 | |
| 223 | /* |
| 224 | POSIX I/O is being used, the data has to be copied out of the |
| 225 | GPU into a CPU buffer. GPU memory doesn't contain the actual |
| 226 | data to write, copy the data to the junk buffer. The purpose |
| 227 | of this is to add the overhead of cudaMemcpy() that would be |
| 228 | present in a POSIX I/O CUDA application. |
| 229 | */ |
| 230 | check_cudaruntimecall(cudaMemcpy(o->junk_buf + gpu_offset, |
| 231 | ((char*) o->cu_mem_ptr) + gpu_offset, |
| 232 | io_u->xfer_buflen, |
| 233 | cudaMemcpyDeviceToHost), rc); |
| 234 | if (rc != 0) { |
| 235 | log_err("DDIR_WRITE cudaMemcpy D2H failed\n"); |
| 236 | io_u->error = EIO; |
| 237 | } |
| 238 | } else { |
| 239 | log_err("Illegal CUDA IO type: %d\n", o->cuda_io); |
| 240 | assert(0); |
| 241 | rc = EINVAL; |
| 242 | } |
| 243 | |
| 244 | return rc; |
| 245 | } |
| 246 | |
| 247 | static inline int fio_libcufile_post_read(struct thread_data *td, |
| 248 | struct libcufile_options *o, |
| 249 | struct io_u *io_u, |
| 250 | size_t gpu_offset) |
| 251 | { |
| 252 | int rc = 0; |
| 253 | |
| 254 | if (o->cuda_io == IO_CUFILE) { |
| 255 | if (td->o.verify) { |
| 256 | /* Copy GPU memory to CPU buffer for verify */ |
| 257 | check_cudaruntimecall(cudaMemcpy(io_u->xfer_buf, |
| 258 | ((char*) o->cu_mem_ptr) + gpu_offset, |
| 259 | io_u->xfer_buflen, |
| 260 | cudaMemcpyDeviceToHost), rc); |
| 261 | if (rc != 0) { |
| 262 | log_err("DDIR_READ cudaMemcpy D2H failed\n"); |
| 263 | io_u->error = EIO; |
| 264 | } |
| 265 | } |
| 266 | } else if (o->cuda_io == IO_POSIX) { |
| 267 | /* POSIX I/O read, copy the CPU buffer to GPU memory */ |
| 268 | check_cudaruntimecall(cudaMemcpy(((char*) o->cu_mem_ptr) + gpu_offset, |
| 269 | io_u->xfer_buf, |
| 270 | io_u->xfer_buflen, |
| 271 | cudaMemcpyHostToDevice), rc); |
| 272 | if (rc != 0) { |
| 273 | log_err("DDIR_READ cudaMemcpy H2D failed\n"); |
| 274 | io_u->error = EIO; |
| 275 | } |
| 276 | } else { |
| 277 | log_err("Illegal CUDA IO type: %d\n", o->cuda_io); |
| 278 | assert(0); |
| 279 | rc = EINVAL; |
| 280 | } |
| 281 | |
| 282 | return rc; |
| 283 | } |
| 284 | |
| 285 | static enum fio_q_status fio_libcufile_queue(struct thread_data *td, |
| 286 | struct io_u *io_u) |
| 287 | { |
| 288 | struct libcufile_options *o = td->eo; |
| 289 | struct fio_libcufile_data *fcd = FILE_ENG_DATA(io_u->file); |
| 290 | unsigned long long io_offset; |
| 291 | ssize_t sz; |
| 292 | ssize_t remaining; |
| 293 | size_t xfered; |
| 294 | size_t gpu_offset; |
| 295 | int rc; |
| 296 | |
| 297 | if (o->cuda_io == IO_CUFILE && fcd == NULL) { |
| 298 | io_u->error = EINVAL; |
| 299 | td_verror(td, EINVAL, "xfer"); |
| 300 | return FIO_Q_COMPLETED; |
| 301 | } |
| 302 | |
| 303 | fio_ro_check(td, io_u); |
| 304 | |
| 305 | switch(io_u->ddir) { |
| 306 | case DDIR_SYNC: |
| 307 | rc = fsync(io_u->file->fd); |
| 308 | if (rc != 0) { |
| 309 | io_u->error = errno; |
| 310 | log_err("fsync: err=%d\n", errno); |
| 311 | } |
| 312 | break; |
| 313 | |
| 314 | case DDIR_DATASYNC: |
| 315 | rc = fdatasync(io_u->file->fd); |
| 316 | if (rc != 0) { |
| 317 | io_u->error = errno; |
| 318 | log_err("fdatasync: err=%d\n", errno); |
| 319 | } |
| 320 | break; |
| 321 | |
| 322 | case DDIR_READ: |
| 323 | case DDIR_WRITE: |
| 324 | /* |
| 325 | There may be a better way to calculate gpu_offset. The intent is |
| 326 | that gpu_offset equals the the difference between io_u->xfer_buf and |
| 327 | the page-aligned base address for io_u buffers. |
| 328 | */ |
| 329 | gpu_offset = io_u->index * io_u->xfer_buflen; |
| 330 | io_offset = io_u->offset; |
| 331 | remaining = io_u->xfer_buflen; |
| 332 | |
| 333 | xfered = 0; |
| 334 | sz = 0; |
| 335 | |
| 336 | assert(gpu_offset + io_u->xfer_buflen <= o->total_mem); |
| 337 | |
| 338 | if (o->cuda_io == IO_CUFILE) { |
| 339 | if (!(ALIGNED_4KB(io_u->xfer_buflen) || |
| 340 | (o->logged & LOGGED_BUFLEN_NOT_ALIGNED))) { |
| 341 | log_err("buflen not 4KB-aligned: %llu\n", io_u->xfer_buflen); |
| 342 | o->logged |= LOGGED_BUFLEN_NOT_ALIGNED; |
| 343 | } |
| 344 | |
| 345 | if (!(ALIGNED_4KB(gpu_offset) || |
| 346 | (o->logged & LOGGED_GPU_OFFSET_NOT_ALIGNED))) { |
| 347 | log_err("gpu_offset not 4KB-aligned: %lu\n", gpu_offset); |
| 348 | o->logged |= LOGGED_GPU_OFFSET_NOT_ALIGNED; |
| 349 | } |
| 350 | } |
| 351 | |
| 352 | if (io_u->ddir == DDIR_WRITE) |
| 353 | rc = fio_libcufile_pre_write(td, o, io_u, gpu_offset); |
| 354 | |
| 355 | if (io_u->error != 0) |
| 356 | break; |
| 357 | |
| 358 | while (remaining > 0) { |
| 359 | assert(gpu_offset + xfered <= o->total_mem); |
| 360 | if (io_u->ddir == DDIR_READ) { |
| 361 | if (o->cuda_io == IO_CUFILE) { |
| 362 | sz = cuFileRead(fcd->cf_handle, o->cu_mem_ptr, remaining, |
| 363 | io_offset + xfered, gpu_offset + xfered); |
| 364 | if (sz == -1) { |
| 365 | io_u->error = errno; |
| 366 | log_err("cuFileRead: err=%d\n", errno); |
| 367 | } else if (sz < 0) { |
| 368 | io_u->error = EIO; |
| 369 | log_err("cuFileRead: err=%ld:%s\n", sz, |
| 370 | cufileop_status_error(-sz)); |
| 371 | } |
| 372 | } else if (o->cuda_io == IO_POSIX) { |
| 373 | sz = pread(io_u->file->fd, ((char*) io_u->xfer_buf) + xfered, |
| 374 | remaining, io_offset + xfered); |
| 375 | if (sz < 0) { |
| 376 | io_u->error = errno; |
| 377 | log_err("pread: err=%d\n", errno); |
| 378 | } |
| 379 | } else { |
| 380 | log_err("Illegal CUDA IO type: %d\n", o->cuda_io); |
| 381 | io_u->error = -1; |
| 382 | assert(0); |
| 383 | } |
| 384 | } else if (io_u->ddir == DDIR_WRITE) { |
| 385 | if (o->cuda_io == IO_CUFILE) { |
| 386 | sz = cuFileWrite(fcd->cf_handle, o->cu_mem_ptr, remaining, |
| 387 | io_offset + xfered, gpu_offset + xfered); |
| 388 | if (sz == -1) { |
| 389 | io_u->error = errno; |
| 390 | log_err("cuFileWrite: err=%d\n", errno); |
| 391 | } else if (sz < 0) { |
| 392 | io_u->error = EIO; |
| 393 | log_err("cuFileWrite: err=%ld:%s\n", sz, |
| 394 | cufileop_status_error(-sz)); |
| 395 | } |
| 396 | } else if (o->cuda_io == IO_POSIX) { |
| 397 | sz = pwrite(io_u->file->fd, |
| 398 | ((char*) io_u->xfer_buf) + xfered, |
| 399 | remaining, io_offset + xfered); |
| 400 | if (sz < 0) { |
| 401 | io_u->error = errno; |
| 402 | log_err("pwrite: err=%d\n", errno); |
| 403 | } |
| 404 | } else { |
| 405 | log_err("Illegal CUDA IO type: %d\n", o->cuda_io); |
| 406 | io_u->error = -1; |
| 407 | assert(0); |
| 408 | } |
| 409 | } else { |
| 410 | log_err("not DDIR_READ or DDIR_WRITE: %d\n", io_u->ddir); |
| 411 | io_u->error = -1; |
| 412 | assert(0); |
| 413 | break; |
| 414 | } |
| 415 | |
| 416 | if (io_u->error != 0) |
| 417 | break; |
| 418 | |
| 419 | remaining -= sz; |
| 420 | xfered += sz; |
| 421 | |
| 422 | if (remaining != 0) |
| 423 | log_info("Incomplete %s: %ld bytes remaining\n", |
| 424 | io_u->ddir == DDIR_READ? "read" : "write", remaining); |
| 425 | } |
| 426 | |
| 427 | if (io_u->error != 0) |
| 428 | break; |
| 429 | |
| 430 | if (io_u->ddir == DDIR_READ) |
| 431 | rc = fio_libcufile_post_read(td, o, io_u, gpu_offset); |
| 432 | break; |
| 433 | |
| 434 | default: |
| 435 | io_u->error = EINVAL; |
| 436 | break; |
| 437 | } |
| 438 | |
| 439 | if (io_u->error != 0) { |
| 440 | log_err("IO failed\n"); |
| 441 | td_verror(td, io_u->error, "xfer"); |
| 442 | } |
| 443 | |
| 444 | return FIO_Q_COMPLETED; |
| 445 | } |
| 446 | |
| 447 | static int fio_libcufile_open_file(struct thread_data *td, struct fio_file *f) |
| 448 | { |
| 449 | struct libcufile_options *o = td->eo; |
| 450 | struct fio_libcufile_data *fcd = NULL; |
| 451 | int rc; |
| 452 | CUfileError_t status; |
| 453 | |
| 454 | rc = generic_open_file(td, f); |
| 455 | if (rc) |
| 456 | return rc; |
| 457 | |
| 458 | if (o->cuda_io == IO_CUFILE) { |
| 459 | fcd = calloc(1, sizeof(*fcd)); |
| 460 | if (fcd == NULL) { |
| 461 | rc = ENOMEM; |
| 462 | goto exit_err; |
| 463 | } |
| 464 | |
| 465 | fcd->cf_descr.handle.fd = f->fd; |
| 466 | fcd->cf_descr.type = CU_FILE_HANDLE_TYPE_OPAQUE_FD; |
| 467 | status = cuFileHandleRegister(&fcd->cf_handle, &fcd->cf_descr); |
| 468 | if (status.err != CU_FILE_SUCCESS) { |
| 469 | log_err("cufile register: err=%d:%s\n", status.err, |
| 470 | fio_libcufile_get_cuda_error(status)); |
| 471 | rc = EINVAL; |
| 472 | goto exit_err; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | FILE_SET_ENG_DATA(f, fcd); |
| 477 | return 0; |
| 478 | |
| 479 | exit_err: |
| 480 | if (fcd) { |
| 481 | free(fcd); |
| 482 | fcd = NULL; |
| 483 | } |
| 484 | if (f) { |
| 485 | int rc2 = generic_close_file(td, f); |
| 486 | if (rc2) |
| 487 | log_err("generic_close_file: err=%d\n", rc2); |
| 488 | } |
| 489 | return rc; |
| 490 | } |
| 491 | |
| 492 | static int fio_libcufile_close_file(struct thread_data *td, struct fio_file *f) |
| 493 | { |
| 494 | struct fio_libcufile_data *fcd = FILE_ENG_DATA(f); |
| 495 | int rc; |
| 496 | |
| 497 | if (fcd != NULL) { |
| 498 | cuFileHandleDeregister(fcd->cf_handle); |
| 499 | FILE_SET_ENG_DATA(f, NULL); |
| 500 | free(fcd); |
| 501 | } |
| 502 | |
| 503 | rc = generic_close_file(td, f); |
| 504 | |
| 505 | return rc; |
| 506 | } |
| 507 | |
| 508 | static int fio_libcufile_iomem_alloc(struct thread_data *td, size_t total_mem) |
| 509 | { |
| 510 | struct libcufile_options *o = td->eo; |
| 511 | int rc; |
| 512 | CUfileError_t status; |
| 513 | |
| 514 | o->total_mem = total_mem; |
| 515 | o->logged = 0; |
| 516 | o->cu_mem_ptr = NULL; |
| 517 | o->junk_buf = NULL; |
| 518 | td->orig_buffer = calloc(1, total_mem); |
| 519 | if (!td->orig_buffer) { |
| 520 | log_err("orig_buffer calloc failed: err=%d\n", errno); |
| 521 | goto exit_error; |
| 522 | } |
| 523 | |
| 524 | if (o->cuda_io == IO_POSIX) { |
| 525 | o->junk_buf = calloc(1, total_mem); |
| 526 | if (o->junk_buf == NULL) { |
| 527 | log_err("junk_buf calloc failed: err=%d\n", errno); |
| 528 | goto exit_error; |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | dprint(FD_MEM, "Alloc %zu for GPU %d\n", total_mem, o->my_gpu_id); |
| 533 | check_cudaruntimecall(cudaMalloc(&o->cu_mem_ptr, total_mem), rc); |
| 534 | if (rc != 0) |
| 535 | goto exit_error; |
| 536 | check_cudaruntimecall(cudaMemset(o->cu_mem_ptr, 0xab, total_mem), rc); |
| 537 | if (rc != 0) |
| 538 | goto exit_error; |
| 539 | |
| 540 | if (o->cuda_io == IO_CUFILE) { |
| 541 | status = cuFileBufRegister(o->cu_mem_ptr, total_mem, 0); |
| 542 | if (status.err != CU_FILE_SUCCESS) { |
| 543 | log_err("cuFileBufRegister: err=%d:%s\n", status.err, |
| 544 | fio_libcufile_get_cuda_error(status)); |
| 545 | goto exit_error; |
| 546 | } |
| 547 | } |
| 548 | |
| 549 | return 0; |
| 550 | |
| 551 | exit_error: |
| 552 | if (td->orig_buffer) { |
| 553 | free(td->orig_buffer); |
| 554 | td->orig_buffer = NULL; |
| 555 | } |
| 556 | if (o->junk_buf) { |
| 557 | free(o->junk_buf); |
| 558 | o->junk_buf = NULL; |
| 559 | } |
| 560 | if (o->cu_mem_ptr) { |
| 561 | cudaFree(o->cu_mem_ptr); |
| 562 | o->cu_mem_ptr = NULL; |
| 563 | } |
| 564 | return 1; |
| 565 | } |
| 566 | |
| 567 | static void fio_libcufile_iomem_free(struct thread_data *td) |
| 568 | { |
| 569 | struct libcufile_options *o = td->eo; |
| 570 | |
| 571 | if (o->junk_buf) { |
| 572 | free(o->junk_buf); |
| 573 | o->junk_buf = NULL; |
| 574 | } |
| 575 | if (o->cu_mem_ptr) { |
| 576 | if (o->cuda_io == IO_CUFILE) |
| 577 | cuFileBufDeregister(o->cu_mem_ptr); |
| 578 | cudaFree(o->cu_mem_ptr); |
| 579 | o->cu_mem_ptr = NULL; |
| 580 | } |
| 581 | if (td->orig_buffer) { |
| 582 | free(td->orig_buffer); |
| 583 | td->orig_buffer = NULL; |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | static void fio_libcufile_cleanup(struct thread_data *td) |
| 588 | { |
| 589 | struct libcufile_options *o = td->eo; |
| 590 | |
| 591 | pthread_mutex_lock(&running_lock); |
| 592 | running--; |
| 593 | assert(running >= 0); |
| 594 | if (running == 0) { |
| 595 | /* only close the driver if initialized and |
| 596 | this is the last worker thread */ |
| 597 | if (o->cuda_io == IO_CUFILE && cufile_initialized) |
| 598 | cuFileDriverClose(); |
| 599 | cufile_initialized = 0; |
| 600 | } |
| 601 | pthread_mutex_unlock(&running_lock); |
| 602 | } |
| 603 | |
| 604 | FIO_STATIC struct ioengine_ops ioengine = { |
| 605 | .name = "libcufile", |
| 606 | .version = FIO_IOOPS_VERSION, |
| 607 | .init = fio_libcufile_init, |
| 608 | .queue = fio_libcufile_queue, |
| 609 | .get_file_size = generic_get_file_size, |
| 610 | .open_file = fio_libcufile_open_file, |
| 611 | .close_file = fio_libcufile_close_file, |
| 612 | .iomem_alloc = fio_libcufile_iomem_alloc, |
| 613 | .iomem_free = fio_libcufile_iomem_free, |
| 614 | .cleanup = fio_libcufile_cleanup, |
| 615 | .flags = FIO_SYNCIO, |
| 616 | .options = options, |
| 617 | .option_struct_size = sizeof(struct libcufile_options) |
| 618 | }; |
| 619 | |
| 620 | void fio_init fio_libcufile_register(void) |
| 621 | { |
| 622 | register_ioengine(&ioengine); |
| 623 | } |
| 624 | |
| 625 | void fio_exit fio_libcufile_unregister(void) |
| 626 | { |
| 627 | unregister_ioengine(&ioengine); |
| 628 | } |