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kernel.h 19 kB

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  1. /**
  2. * Copyright 2020 Huawei Technologies Co., Ltd
  3. * Licensed under the Apache License, Version 2.0 (the "License");
  4. * you may not use this file except in compliance with the License.
  5. * You may obtain a copy of the License at
  6. * http://www.apache.org/licenses/LICENSE-2.0
  7. * Unless required by applicable law or agreed to in writing, software
  8. * distributed under the License is distributed on an "AS IS" BASIS,
  9. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10. * See the License for the specific language governing permissions and
  11. * limitations under the License.
  12. */
  13. #ifndef __CCE_RUNTIME_KERNEL_H__
  14. #define __CCE_RUNTIME_KERNEL_H__
  15. #include "base.h"
  16. #include "stream.h"
  17. #if defined(__cplusplus) && !defined(COMPILE_OMG_PACKAGE)
  18. extern "C" {
  19. #endif
  20. /**
  21. * @ingroup rt_kernel
  22. * @brief shared memory data control
  23. */
  24. typedef struct tagRtSmData {
  25. uint64_t L2_mirror_addr; // preload or swap source address
  26. uint32_t L2_data_section_size; // every data size
  27. uint8_t L2_preload; // 1 - preload from mirrorAddr, 0 - no preload
  28. uint8_t modified; // 1 - data will be modified by kernel, 0 - no modified
  29. uint8_t priority; // data priority
  30. int8_t prev_L2_page_offset_base; // remap source section offset
  31. uint8_t L2_page_offset_base; // remap destination section offset
  32. uint8_t L2_load_to_ddr; // 1 - need load out, 0 - no need
  33. uint8_t reserved[2]; // reserved
  34. } rtSmData_t;
  35. /**
  36. * @ingroup rt_kernel
  37. * @brief shared memory description
  38. */
  39. typedef struct tagRtSmCtrl {
  40. rtSmData_t data[8]; // data description
  41. uint64_t size; // max page Num
  42. uint8_t remap[64]; /* just using for static remap mode, default:0xFF
  43. array index: virtual l2 page id, array value: physic l2 page id */
  44. uint8_t l2_in_main; // 0-DDR, 1-L2, default:0xFF
  45. uint8_t reserved[3];
  46. } rtSmDesc_t;
  47. typedef rtSmDesc_t rtL2Ctrl_t;
  48. /**
  49. * @ingroup rt_kernel
  50. * @brief device binary type
  51. */
  52. typedef struct tagRtDevBinary {
  53. uint32_t magic; // magic number
  54. uint32_t version; // version of binary
  55. const void *data; // binary data
  56. uint64_t length; // binary length
  57. } rtDevBinary_t;
  58. /**
  59. * @ingroup rt_kernel
  60. * @brief function mode type
  61. */
  62. #define ONLINE_PROF_MAX_PMU_NUM (8)
  63. typedef struct ProfilefDataInfo {
  64. const void *stubFunc;
  65. uint32_t blockDim;
  66. const void *args;
  67. uint32_t argsSize;
  68. rtSmDesc_t *smDesc;
  69. rtStream_t stream;
  70. uint64_t totalcycle;
  71. uint64_t ovcycle;
  72. uint64_t pmu_cnt[ONLINE_PROF_MAX_PMU_NUM];
  73. } rtProfDataInfo_t;
  74. /**
  75. * @ingroup rt_kernel
  76. * @brief function mode type
  77. */
  78. typedef enum {
  79. FUNC_MODE_NORMAL = 0,
  80. FUNC_MODE_PCTRACE_USERPROFILE_RECORDLOOP,
  81. FUNC_MODE_PCTRACE_USERPROFILE_SKIPLOOP,
  82. FUNC_MODE_PCTRACE_CYCLECNT_RECORDLOOP,
  83. FUNC_MODE_PCTRACE_CYCLECNT_SKIPLOOP,
  84. FUNC_MODE_BUTT
  85. } rtFuncModeType_t;
  86. /**
  87. * @ingroup rt_kernel
  88. * @brief kernel info
  89. */
  90. typedef struct rtKernelInfo {
  91. uint64_t task_offset; // kernel offset in module
  92. /* flowtable */
  93. void *arg; // launch kernel arg
  94. uint32_t arg_size;
  95. /* module */
  96. void *module_addr; // module::baseaddr_
  97. uint32_t module_size;
  98. } *rtKernelInfo_t;
  99. /**
  100. * @ingroup rt_KernelConfigDump
  101. * @brief device dump type
  102. */
  103. typedef enum tagRtDumpKind {
  104. RT_DATA_DUMP_KIND_INVALID = -1,
  105. RT_DATA_DUMP_KIND_DUMP = 0,
  106. RT_DATA_DUMP_KIND_RESERVED
  107. } rtDumpKind_t;
  108. /**
  109. * @ingroup rt_kernel
  110. * @brief report callback
  111. */
  112. typedef rtError_t (*rtKernelReportCallback)(rtStream_t stream, rtKernelInfo_t kernelInfo);
  113. /**
  114. * @ingroup rt_kernel
  115. * @brief stream report callback
  116. */
  117. typedef void (*rtCallback_t)(void *fnData);
  118. /**
  119. * @ingroup rt_kernel
  120. * @brief magic number of plain binary for aicore
  121. */
  122. #define RT_DEV_BINARY_MAGIC_PLAIN 0xabceed50
  123. /**
  124. * @ingroup rt_kernel
  125. * @brief magic number of plain binary for aicpu
  126. */
  127. #define RT_DEV_BINARY_MAGIC_PLAIN_AICPU 0xabceed51
  128. /**
  129. * @ingroup rt_kernel
  130. * @brief magic number of plain binary for aivector
  131. */
  132. #define RT_DEV_BINARY_MAGIC_PLAIN_AIVEC 0xabceed52
  133. /**
  134. * @ingroup rt_kernel
  135. * @brief magic number of elf binary for aicore
  136. */
  137. #define RT_DEV_BINARY_MAGIC_ELF 0x43554245
  138. /**
  139. * @ingroup rt_kernel
  140. * @brief magic number of elf binary for aicpu
  141. */
  142. #define RT_DEV_BINARY_MAGIC_ELF_AICPU 0x41415243
  143. /**
  144. * @ingroup rt_kernel
  145. * @brief magic number of elf binary for aivector
  146. */
  147. #define RT_DEV_BINARY_MAGIC_ELF_AIVEC 0x41415246
  148. /**
  149. * @ingroup rt_kernel
  150. * @brief magic number of elf binary for aicube
  151. */
  152. #define RT_DEV_BINARY_MAGIC_ELF_AICUBE 0x41415247
  153. /**
  154. * @ingroup rt_kernel
  155. * @brief magic number of elf binary for aivector
  156. */
  157. #define RT_DEV_BINARY_MAGIC_ELF_AIVECTOR 0x41415248
  158. /**
  159. * @ingroup rt_kernel_flags
  160. * @brief kernel op bit flags
  161. */
  162. #define RT_KERNEL_DEFAULT (0x00)
  163. #define RT_KERNEL_CONVERT (0x01)
  164. #define RT_KERNEL_DUMPFLAG (0x02)
  165. #define RT_FUSION_KERNEL_DUMPFLAG (0x04)
  166. #define RT_KERNEL_CUSTOM_AICPU (0x08)
  167. // STARS topic scheduler sqe : topic_type
  168. #define RT_KERNEL_DEVICE_FIRST (0X10)
  169. #define RT_KERNEL_HOST_ONLY (0X20)
  170. #define RT_KERNEL_HOST_FIRST (0X30)
  171. /**
  172. * @ingroup rt_kernel
  173. * @brief kernel mode
  174. */
  175. #define RT_DEFAULT_KERNEL_MODE (0x00)
  176. #define RT_NORMAL_KERNEL_MODE (0x01)
  177. #define RT_ALL_KERNEL_MODE (0x02)
  178. /**
  179. * @ingroup rt_kernel
  180. * @brief kernel L1 Fusion Dump bit flags
  181. */
  182. #define RT_DDR_ADDR (0x0)
  183. /**
  184. * @ingroup rt_kernel
  185. * @brief register device binary
  186. * @param [in] bin device binary description
  187. * @param [out] handle device binary handle
  188. * @return RT_ERROR_NONE for ok
  189. * @return RT_ERROR_INVALID_VALUE for error input
  190. */
  191. RTS_API rtError_t rtDevBinaryRegister(const rtDevBinary_t *bin, void **handle);
  192. /**
  193. * @ingroup rt_kernel
  194. * @brief register device binary
  195. * @param [in] bin device binary description
  196. * @param [out] handle device binary handle
  197. * @return RT_ERROR_NONE for ok
  198. * @return RT_ERROR_INVALID_VALUE for error input
  199. */
  200. RTS_API rtError_t rtRegisterAllKernel(const rtDevBinary_t *bin, void **handle);
  201. /**
  202. * @ingroup rt_kernel
  203. * @brief register fast memeory device binary
  204. * @param [in] handle device binary handle
  205. * @return RT_ERROR_NONE for ok
  206. * @return RT_ERROR_INVALID_VALUE for error input
  207. */
  208. RTS_API rtError_t rtBinaryRegisterToFastMemory(void *handle);
  209. /**
  210. * @ingroup rt_kernel
  211. * @brief unregister device binary
  212. * @param [in] handle device binary handle
  213. * @return RT_ERROR_NONE for ok
  214. * @return RT_ERROR_INVALID_VALUE for error input
  215. */
  216. RTS_API rtError_t rtDevBinaryUnRegister(void *handle);
  217. /**
  218. * @ingroup rt_kernel
  219. * @brief register device binary metadata
  220. * @param [in] handle device binary description
  221. * @param [in] metadata device binary metadata
  222. * @return RT_ERROR_NONE for ok
  223. * @return RT_ERROR_INVALID_VALUE for error input
  224. */
  225. RTS_API rtError_t rtMetadataRegister(void *handle, const char *metadata);
  226. /**
  227. * @ingroup rt_kernel
  228. * @brief register device binary dependency
  229. * @param [in] mHandle master device binary description
  230. * @param [in] sHandle slave device binary description
  231. * @return RT_ERROR_NONE for ok
  232. * @return RT_ERROR_INVALID_VALUE for error input
  233. */
  234. RTS_API rtError_t rtDependencyRegister(void *mHandle, void *sHandle);
  235. /**
  236. * @ingroup rt_kernel
  237. * @brief register device function
  238. * @param [in] binHandle device binary handle
  239. * @param [in] stubFunc stub function
  240. * @param [in] stubName stub function name
  241. * @param [in] devFunc device function description. symbol name or address
  242. * offset, depending binary type.
  243. * @return RT_ERROR_NONE for ok
  244. * @return RT_ERROR_INVALID_VALUE for error input
  245. */
  246. RTS_API rtError_t rtFunctionRegister(void *binHandle, const void *stubFunc, const char *stubName, const void *devFunc,
  247. uint32_t funcMode);
  248. /**
  249. * @ingroup rt_kernel
  250. * @brief find stub function by name
  251. * @param [in] stubName stub function name
  252. * @param [out] stubFunc stub function
  253. * @return RT_ERROR_NONE for ok
  254. * @return RT_ERROR_INVALID_VALUE for error input
  255. */
  256. RTS_API rtError_t rtGetFunctionByName(const char *stubName, void **stubFunc);
  257. /**
  258. * @ingroup rt_kernel
  259. * @brief find addr by stub func
  260. * @param [in] stubFunc stub function
  261. * @param [out] addr
  262. * @return RT_ERROR_NONE for ok
  263. * @return RT_ERROR_INVALID_VALUE for error input
  264. */
  265. RTS_API rtError_t rtGetAddrByFun(const void *stubFunc, void **addr);
  266. /**
  267. * @ingroup rt_kernel
  268. * @brief query registered or not by stubName
  269. * @param [in] stubName stub function name
  270. * @return RT_ERROR_NONE for ok
  271. * @return RT_ERROR_INVALID_VALUE for error input
  272. */
  273. RTS_API rtError_t rtQueryFunctionRegistered(const char *stubName);
  274. /**
  275. * @ingroup rt_kernel
  276. * @brief config data dump
  277. * @param [in] dumpSizePerBlock dump size
  278. * @param [in] blockDim block dimentions
  279. * @param [in] dumpBaseAddr dump base address
  280. * @return RT_ERROR_NONE for ok
  281. * @return RT_ERROR_INVALID_VALUE for error input
  282. */
  283. RTS_API rtError_t rtKernelConfigDump(uint32_t kind, uint32_t dumpSizePerBlock, uint32_t blockDim, void **dumpBaseAddr,
  284. rtStream_t stream);
  285. /**
  286. * @ingroup rt_kernel
  287. * @brief launch kernel to device
  288. * @param [in] stubFunc stub function
  289. * @param [in] blockDim block dimentions
  290. * @param [in] args argments address for kernel function
  291. * @param [in] argsSize argements size
  292. * @param [in] smDesc shared memory description
  293. * @param [in] stream associated stream
  294. * @return RT_ERROR_NONE for ok
  295. * @return RT_ERROR_INVALID_VALUE for error input
  296. */
  297. RTS_API rtError_t rtKernelLaunch(const void *stubFunc, uint32_t blockDim, void *args, uint32_t argsSize,
  298. rtSmDesc_t *smDesc, rtStream_t stream);
  299. /**
  300. * @ingroup rt_kernel
  301. * @brief launch kernel with handle to device
  302. * @param [in] handle program
  303. * @param [in] devFunc device function description
  304. * @param [in] blockDim block dimentions
  305. * @param [in] args argments address for kernel function
  306. * @param [in] argsSize argements size
  307. * @param [in] smDesc shared memory description
  308. * @param [in] stream associated stream
  309. * @param [in] kernelInfo kernel info
  310. * @return RT_ERROR_NONE for ok
  311. * @return RT_ERROR_INVALID_VALUE for error input
  312. */
  313. RTS_API rtError_t rtKernelLaunchWithHandle(void *handle, const void *devFunc, uint32_t blockDim, void *args, uint32_t argsSize,
  314. rtSmDesc_t *smDesc, rtStream_t stream, const void *kernelInfo);
  315. /**
  316. * @ingroup rt_kernel
  317. * @brief launch kernel to device
  318. * @param [in] stubFunc stub function
  319. * @param [in] blockDim block dimentions
  320. * @param [in] args argments address for kernel function
  321. * @param [in] argsSize argements size
  322. * @param [in] smDesc shared memory description
  323. * @param [in] stream associated stream
  324. * @param [in] flag dump flag
  325. * @return RT_ERROR_NONE for ok
  326. * @return RT_ERROR_INVALID_VALUE for error input
  327. */
  328. RTS_API rtError_t rtKernelLaunchWithFlag(const void *stubFunc, uint32_t blockDim, void *args, uint32_t argsSize,
  329. rtSmDesc_t *smDesc, rtStream_t stream, uint32_t flags);
  330. /**
  331. * @ingroup rt_kernel
  332. * @brief launch kernel to device
  333. * @param [in] args argments address for kernel function
  334. * @param [in] argsSize argements size
  335. * @param [in] flags launch flags
  336. * @param [in] stream associated stream
  337. * @return RT_ERROR_NONE for ok
  338. * @return RT_ERROR_INVALID_VALUE for error input
  339. */
  340. RTS_API rtError_t rtKernelLaunchEx(void *args, uint32_t argsSize, uint32_t flags, rtStream_t stream);
  341. /**
  342. * @ingroup rt_kernel
  343. * @brief launch cpu kernel to device
  344. * @param [in] soName so name
  345. * @param [in] kernelName kernel name
  346. * @param [in] blockDim block dimentions
  347. * @param [in] args argments address for kernel function
  348. * @param [in] argsSize argments size
  349. * @param [in] smDesc shared memory description
  350. * @param [in] stream associated stream
  351. * @return RT_ERROR_NONE for ok
  352. * @return RT_ERROR_INVALID_VALUE for error input
  353. */
  354. RTS_API rtError_t rtCpuKernelLaunch(const void *soName, const void *kernelName, uint32_t blockDim, const void *args,
  355. uint32_t argsSize, rtSmDesc_t *smDesc, rtStream_t stream);
  356. /**
  357. * @ingroup rt_kernel
  358. * @brief launch cpu kernel to device with dump identifier
  359. * @param [in] soName so name
  360. * @param [in] kernelName kernel name
  361. * @param [in] blockDim block dimentions
  362. * @param [in] args argments address for kernel function
  363. * @param [in] argsSize argments size
  364. * @param [in] smDesc shared memory description
  365. * @param [in] stream associated stream
  366. * @param [in] flag dump flag or others function flag
  367. * @return RT_ERROR_NONE for ok
  368. * @return RT_ERROR_INVALID_VALUE for error input
  369. */
  370. RTS_API rtError_t rtCpuKernelLaunchWithFlag(const void *soName, const void *kernelName, uint32_t blockDim,
  371. const void *args, uint32_t argsSize, rtSmDesc_t *smDesc, rtStream_t stream,
  372. uint32_t flags);
  373. /**
  374. * @ingroup rt_kernel
  375. * @brief L1 fusion dump addr transfered to device
  376. * @param [in] model handle info
  377. * @param [in] addr ddr address of L1 Fusion Dump
  378. * @param [in] dumpSize memory size
  379. * @param [in] flag memory flag
  380. * @return RT_ERROR_NONE for ok
  381. * @return RT_ERROR_INVALID_VALUE for error input
  382. */
  383. RTS_API rtError_t rtDumpAddrSet(rtModel_t model, void *addr, uint32_t dumpSize, uint32_t flag);
  384. /**
  385. * @ingroup rt_kernel
  386. * @brief load dump info to aicpu
  387. * @param [in] dumpInfo dump info
  388. * @param [in] length length of dump info
  389. * @return RT_ERROR_NONE for ok
  390. * @return RT_ERROR_INVALID_VALUE for error input
  391. */
  392. RTS_API rtError_t rtDatadumpInfoLoad(const void *dumpInfo, uint32_t length);
  393. #ifndef __CLANG_CCE_RUNTIME_H__
  394. #define __CLANG_CCE_RUNTIME_H__
  395. /**
  396. * @ingroup rt_kernel
  397. * @brief configure call argment for next rtLaunch in current thread
  398. * @param [in] numBlocks block dimentions
  399. * @param [in] smDesc shared memory description
  400. * @param [in] stream associated stream
  401. * @return RT_ERROR_NONE for ok
  402. * @return RT_ERROR_INVALID_VALUE for error input
  403. */
  404. #ifdef __cplusplus
  405. RTS_API rtError_t rtConfigureCall(uint32_t numBlocks, rtSmDesc_t *smDesc = nullptr, rtStream_t stream = nullptr);
  406. #else
  407. RTS_API rtError_t rtConfigureCall(uint32_t numBlocks, rtSmDesc_t *smDesc, rtStream_t stream);
  408. #endif
  409. #endif // __CLANG_CCE_RUNTIME_H__
  410. /**
  411. * @ingroup rt_kernel
  412. * @brief setup argment for next rtLaunch in current thread
  413. * @param [in] arg argment address for kernel function
  414. * @param [in] size argment size
  415. * @param [in] offset argment table offset
  416. * @return RT_ERROR_NONE for ok
  417. * @return RT_ERROR_INVALID_VALUE for error input
  418. */
  419. RTS_API rtError_t rtSetupArgument(const void *arg, uint32_t size, uint32_t offset);
  420. /**
  421. * @ingroup rt_kernel
  422. * @brief launch kernel to device with previous setting kernel argment
  423. * and call argment
  424. * @param [in] stubFunc stub function
  425. * @return RT_ERROR_NONE for ok
  426. * @return RT_ERROR_INVALID_VALUE for error input
  427. */
  428. RTS_API rtError_t rtLaunch(const void *stubFunc);
  429. /**
  430. * @ingroup rt_kernel
  431. * @brief implicitly transfered data to device.
  432. * lifecycle end after next kernel task finish
  433. * @param [in] ptr host memory
  434. * @param [in] size host memory size
  435. * @param [in] flag reserved. set to 0
  436. * @param [out] arg returned arg. used for next kernel's arg.
  437. * @return RT_ERROR_NONE for ok
  438. * @return RT_ERROR_INVALID_VALUE for error input
  439. */
  440. RTS_API rtError_t rtKernelConfigTransArg(const void *ptr, uint64_t size, uint32_t flag, void **arg);
  441. /**
  442. * @ingroup rt_kernel
  443. * @brief start fusion kernels.
  444. * @param [in] stream stream for fusion kernels
  445. * @return RT_ERROR_NONE for ok
  446. * @return RT_ERROR_INVALID_VALUE for error input
  447. */
  448. RTS_API rtError_t rtKernelFusionStart(rtStream_t stream);
  449. /**
  450. * @ingroup rt_kernel
  451. * @brief end fusion kernels.
  452. * @param [in] stream stream for fusion kernels
  453. * @return RT_ERROR_NONE for ok
  454. * @return RT_ERROR_INVALID_VALUE for error input
  455. */
  456. RTS_API rtError_t rtKernelFusionEnd(rtStream_t stream);
  457. /**
  458. * @ingroup rt_kernel
  459. * @brief set kernelinfo callback
  460. * @param [in] callback
  461. * @return RT_ERROR_NONE for ok
  462. * @return RT_ERROR_INVALID_VALUE for error input
  463. */
  464. RTS_API rtError_t rtSetKernelReportCallback(rtKernelReportCallback callBack);
  465. /**
  466. * @ingroup rt_kernel
  467. * @brief subscribe stream callback report.
  468. * @param [in] threadId thread id for stream
  469. * @param [in] stream stream for subscribe
  470. * @return RT_ERROR_NONE for ok
  471. * @return RT_ERROR_INVALID_VALUE for error input
  472. */
  473. RTS_API rtError_t rtSubscribeReport(uint64_t threadId, rtStream_t stream);
  474. /**
  475. * @ingroup rt_kernel
  476. * @brief add callback launch task in stream.
  477. * @param [in] callBackFunc app callback function
  478. * @param [in] fnData user data
  479. * @param [in] stream subscribed stream
  480. * @return RT_ERROR_NONE for ok
  481. * @return RT_ERROR_INVALID_VALUE for error input
  482. */
  483. RTS_API rtError_t rtCallbackLaunch(rtCallback_t callBackFunc, void *fnData, rtStream_t stream, bool isBlock);
  484. /**
  485. * @ingroup rt_kernel
  486. * @brief process callback report.
  487. * @param [in] timeout if timeout=-1, while(1); else timeout
  488. * @return RT_ERROR_NONE for ok
  489. * @return RT_ERROR_INVALID_VALUE for error input
  490. */
  491. RTS_API rtError_t rtProcessReport(int32_t timeout);
  492. /**
  493. * @ingroup rt_kernel
  494. * @brief unsubscribe callback report.
  495. * @param [in] threadId thread id for stream
  496. * @param [in] stream stream for subscribe
  497. * @return RT_ERROR_NONE for ok
  498. * @return RT_ERROR_INVALID_VALUE for error input
  499. */
  500. RTS_API rtError_t rtUnSubscribeReport(uint64_t threadId, rtStream_t stream);
  501. /**
  502. * @ingroup profiling_base
  503. * @brief start online prof.
  504. * @return RT_ERROR_NONE for ok
  505. * @return RT_ERROR_INVALID_VALUE for error input
  506. */
  507. RTS_API rtError_t rtStartOnlineProf(rtStream_t stream, uint32_t sampleNum);
  508. /**
  509. * @ingroup profiling_base
  510. * @brief stop online prof.
  511. * @return RT_ERROR_NONE for ok
  512. * @return RT_ERROR_INVALID_VALUE for error input
  513. */
  514. RTS_API rtError_t rtStopOnlineProf(rtStream_t stream);
  515. /**
  516. * @ingroup profiling_base
  517. * @brief get online prof.
  518. * @return RT_ERROR_NONE for ok
  519. * @return RT_ERROR_INVALID_VALUE for error input
  520. */
  521. RTS_API rtError_t rtGetOnlineProfData(rtStream_t stream, rtProfDataInfo_t *pProfData, uint32_t profDataNum);
  522. /**
  523. * @ingroup profiling_base
  524. * @brief start mdc profiler.
  525. * @return RT_ERROR_NONE for ok
  526. * @return RT_ERROR_INVALID_VALUE for error input
  527. */
  528. RTS_API rtError_t rtStartMDCProfiler(void **addr, uint32_t length);
  529. /**
  530. * @ingroup profiling_base
  531. * @brief stop mdc profiler.
  532. * @return RT_ERROR_NONE for ok
  533. * @return RT_ERROR_INVALID_VALUE for error input
  534. */
  535. RTS_API rtError_t rtStopMDCProfiler(void *addr);
  536. #if defined(__cplusplus) && !defined(COMPILE_OMG_PACKAGE)
  537. }
  538. #endif
  539. #endif // __CCE_RUNTIME_KERNEL_H__

图引擎模块(GE)是MindSpore的一个子模块,其代码由C++实现,位于前端模块ME和底层硬件之间,起到承接作用。图引擎模块以ME下发的图作为输入,然后进行一系列的深度图优化操作,最后输出一张可以在底层硬件上高效运行的图。GE针对昇腾AI处理器的硬件结构特点,做了特定的优化工作,以此来充分发挥出昇腾AI处理器的强大算力。在进行模型训练/推理时,GE会被自动调用而用户并不感知。GE主要由GE API和GE Core两部分组成,详细的架构图如下所示