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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 0x41494343
  153. /**
  154. * @ingroup rt_kernel_flags
  155. * @brief kernel op bit flags
  156. */
  157. #define RT_KERNEL_DEFAULT (0x00)
  158. #define RT_KERNEL_CONVERT (0x01)
  159. #define RT_KERNEL_DUMPFLAG (0x02)
  160. #define RT_FUSION_KERNEL_DUMPFLAG (0x04)
  161. #define RT_KERNEL_CUSTOM_AICPU (0x08)
  162. /**
  163. * @ingroup rt_kernel
  164. * @brief kernel mode
  165. **/
  166. #define RT_DEFAULT_KERNEL_MODE (0x00)
  167. #define RT_NORMAL_KERNEL_MODE (0x01)
  168. #define RT_ALL_KERNEL_MODE (0x02)
  169. /**
  170. * @ingroup rt_kernel
  171. * @brief kernel L1 Fusion Dump bit flags
  172. */
  173. #define RT_DDR_ADDR (0x0)
  174. /**
  175. * @ingroup rt_kernel
  176. * @brief register device binary
  177. * @param [in] bin device binary description
  178. * @param [out] handle device binary handle
  179. * @return RT_ERROR_NONE for ok
  180. * @return RT_ERROR_INVALID_VALUE for error input
  181. */
  182. RTS_API rtError_t rtDevBinaryRegister(const rtDevBinary_t *bin, void **handle);
  183. /**
  184. * @ingroup rt_kernel
  185. * @brief register device binary with all kernel
  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 rtRegisterAllKernel(const rtDevBinary_t *bin, void **handle);
  192. /**
  193. * @ingroup rt_kernel
  194. * @brief register fast memeory device binary
  195. * @param [in] handle device binary handle
  196. * @return RT_ERROR_NONE for ok
  197. * @return RT_ERROR_INVALID_VALUE for error input
  198. */
  199. RTS_API rtError_t rtBinaryRegisterToFastMemory(void *handle);
  200. /**
  201. * @ingroup rt_kernel
  202. * @brief unregister device binary
  203. * @param [in] handle device binary handle
  204. * @return RT_ERROR_NONE for ok
  205. * @return RT_ERROR_INVALID_VALUE for error input
  206. */
  207. RTS_API rtError_t rtDevBinaryUnRegister(void *handle);
  208. /**
  209. * @ingroup rt_kernel
  210. * @brief register device binary metadata
  211. * @param [in] handle device binary description
  212. * @param [in] metadata device binary metadata
  213. * @return RT_ERROR_NONE for ok
  214. * @return RT_ERROR_INVALID_VALUE for error input
  215. */
  216. RTS_API rtError_t rtMetadataRegister(void *handle, const char *metadata);
  217. /**
  218. * @ingroup rt_kernel
  219. * @brief register device binary dependency
  220. * @param [in] mHandle master device binary description
  221. * @param [in] sHandle slave device binary description
  222. * @return RT_ERROR_NONE for ok
  223. * @return RT_ERROR_INVALID_VALUE for error input
  224. */
  225. RTS_API rtError_t rtDependencyRegister(void *mHandle, void *sHandle);
  226. /**
  227. * @ingroup rt_kernel
  228. * @brief register device function
  229. * @param [in] binHandle device binary handle
  230. * @param [in] stubFunc stub function
  231. * @param [in] stubName stub function name
  232. * @param [in] devFunc device function description. symbol name or address
  233. * offset, depending binary type.
  234. * @return RT_ERROR_NONE for ok
  235. * @return RT_ERROR_INVALID_VALUE for error input
  236. */
  237. RTS_API rtError_t rtFunctionRegister(void *binHandle, const void *stubFunc, const char *stubName, const void *devFunc,
  238. uint32_t funcMode);
  239. /**
  240. * @ingroup rt_kernel
  241. * @brief find stub function by name
  242. * @param [in] stubName stub function name
  243. * @param [out] stubFunc stub function
  244. * @return RT_ERROR_NONE for ok
  245. * @return RT_ERROR_INVALID_VALUE for error input
  246. */
  247. RTS_API rtError_t rtGetFunctionByName(const char *stubName, void **stubFunc);
  248. /**
  249. * @ingroup rt_kernel
  250. * @brief find addr by stub func
  251. * @param [in] stubFunc stub function
  252. * @param [out] addr
  253. * @return RT_ERROR_NONE for ok
  254. * @return RT_ERROR_INVALID_VALUE for error input
  255. */
  256. RTS_API rtError_t rtGetAddrByFun(const void *stubFunc, void **addr);
  257. /**
  258. * @ingroup rt_kernel
  259. * @brief query registered or not by stubName
  260. * @param [in] stubName stub function name
  261. * @return RT_ERROR_NONE for ok
  262. * @return RT_ERROR_INVALID_VALUE for error input
  263. */
  264. RTS_API rtError_t rtQueryFunctionRegistered(const char *stubName);
  265. /**
  266. * @ingroup rt_kernel
  267. * @brief config data dump
  268. * @param [in] dumpSizePerBlock dump size
  269. * @param [in] blockDim block dimentions
  270. * @param [in] dumpBaseAddr dump base address
  271. * @return RT_ERROR_NONE for ok
  272. * @return RT_ERROR_INVALID_VALUE for error input
  273. */
  274. RTS_API rtError_t rtKernelConfigDump(uint32_t kind, uint32_t dumpSizePerBlock, uint32_t blockDim, void **dumpBaseAddr,
  275. rtStream_t stream);
  276. /**
  277. * @ingroup rt_kernel
  278. * @brief launch kernel to device
  279. * @param [in] stubFunc stub function
  280. * @param [in] blockDim block dimentions
  281. * @param [in] args argments address for kernel function
  282. * @param [in] argsSize argements size
  283. * @param [in] smDesc shared memory description
  284. * @param [in] stream associated stream
  285. * @return RT_ERROR_NONE for ok
  286. * @return RT_ERROR_INVALID_VALUE for error input
  287. */
  288. RTS_API rtError_t rtKernelLaunch(const void *stubFunc, uint32_t blockDim, void *args, uint32_t argsSize,
  289. rtSmDesc_t *smDesc, rtStream_t stream);
  290. /**
  291. * @ingroup rt_kernel
  292. * @brief launch kernel with handle to device
  293. * @param [in] handle program
  294. * @param [in] devFunc device function description.
  295. * @param [in] blockDim block dimentions
  296. * @param [in] args argments address for kernel function
  297. * @param [in] argsSize argements size
  298. * @param [in] smDesc shared memory description
  299. * @param [in] stream associated stream
  300. * @param [in] kernelInfo kernel info
  301. * @return RT_ERROR_NONE for ok
  302. * @return RT_ERROR_INVALID_VALUE for error input
  303. */
  304. RTS_API rtError_t rtKernelLaunchWithHandle(void *handle, const void *devFunc, uint32_t blockDim, void *args, uint32_t argsSize,
  305. rtSmDesc_t *smDesc, rtStream_t stream_, const void *kernelInfo);
  306. /**
  307. * @ingroup rt_kernel
  308. * @brief launch kernel to device
  309. * @param [in] stubFunc stub function
  310. * @param [in] blockDim block dimentions
  311. * @param [in] args argments address for kernel function
  312. * @param [in] argsSize argements size
  313. * @param [in] smDesc shared memory description
  314. * @param [in] stream associated stream
  315. * @param [in] flag dump flag
  316. * @return RT_ERROR_NONE for ok
  317. * @return RT_ERROR_INVALID_VALUE for error input
  318. */
  319. RTS_API rtError_t rtKernelLaunchWithFlag(const void *stubFunc, uint32_t blockDim, void *args, uint32_t argsSize,
  320. rtSmDesc_t *smDesc, rtStream_t stream, uint32_t flags);
  321. /**
  322. * @ingroup rt_kernel
  323. * @brief launch kernel to device
  324. * @param [in] args argments address for kernel function
  325. * @param [in] argsSize argements size
  326. * @param [in] flags launch flags
  327. * @param [in] stream associated stream
  328. * @return RT_ERROR_NONE for ok
  329. * @return RT_ERROR_INVALID_VALUE for error input
  330. */
  331. RTS_API rtError_t rtKernelLaunchEx(void *args, uint32_t argsSize, uint32_t flags, rtStream_t stream);
  332. /**
  333. * @ingroup rt_kernel
  334. * @brief launch cpu kernel to device
  335. * @param [in] soName so name
  336. * @param [in] kernelName kernel name
  337. * @param [in] blockDim block dimentions
  338. * @param [in] args argments address for kernel function
  339. * @param [in] argsSize argments size
  340. * @param [in] smDesc shared memory description
  341. * @param [in] stream associated stream
  342. * @return RT_ERROR_NONE for ok
  343. * @return RT_ERROR_INVALID_VALUE for error input
  344. */
  345. RTS_API rtError_t rtCpuKernelLaunch(const void *soName, const void *kernelName, uint32_t blockDim, const void *args,
  346. uint32_t argsSize, rtSmDesc_t *smDesc, rtStream_t stream);
  347. /**
  348. * @ingroup rt_kernel
  349. * @brief launch cpu kernel to device with dump identifier
  350. * @param [in] soName so name
  351. * @param [in] kernelName kernel name
  352. * @param [in] blockDim block dimentions
  353. * @param [in] args argments address for kernel function
  354. * @param [in] argsSize argments size
  355. * @param [in] smDesc shared memory description
  356. * @param [in] stream associated stream
  357. * @param [in] flag dump flag or others function flag
  358. * @return RT_ERROR_NONE for ok
  359. * @return RT_ERROR_INVALID_VALUE for error input
  360. */
  361. RTS_API rtError_t rtCpuKernelLaunchWithFlag(const void *soName, const void *kernelName, uint32_t blockDim,
  362. const void *args, uint32_t argsSize, rtSmDesc_t *smDesc, rtStream_t stream,
  363. uint32_t flags);
  364. /**
  365. * @ingroup rt_kernel
  366. * @brief L1 fusion dump addr transfered to device
  367. * @param [in] model handle info
  368. * @param [in] addr ddr address of L1 Fusion Dump
  369. * @param [in] dumpSize memory size
  370. * @param [in] flag memory flag
  371. * @return RT_ERROR_NONE for ok
  372. * @return RT_ERROR_INVALID_VALUE for error input
  373. */
  374. RTS_API rtError_t rtDumpAddrSet(rtModel_t model, void *addr, uint32_t dumpSize, uint32_t flag);
  375. /**
  376. * @ingroup rt_kernel
  377. * @brief load dump info to aicpu
  378. * @param [in] dumpInfo dump info
  379. * @param [in] length length of dump info
  380. * @return RT_ERROR_NONE for ok
  381. * @return RT_ERROR_INVALID_VALUE for error input
  382. */
  383. RTS_API rtError_t rtDatadumpInfoLoad(const void *dumpInfo, uint32_t length);
  384. #ifndef __CLANG_CCE_RUNTIME_H__
  385. #define __CLANG_CCE_RUNTIME_H__
  386. /**
  387. * @ingroup rt_kernel
  388. * @brief configure call argment for next rtLaunch in current thread
  389. * @param [in] numBlocks block dimentions
  390. * @param [in] smDesc shared memory description
  391. * @param [in] stream associated stream
  392. * @return RT_ERROR_NONE for ok
  393. * @return RT_ERROR_INVALID_VALUE for error input
  394. */
  395. #ifdef __cplusplus
  396. RTS_API rtError_t rtConfigureCall(uint32_t numBlocks, rtSmDesc_t *smDesc = nullptr, rtStream_t stream = nullptr);
  397. #else
  398. RTS_API rtError_t rtConfigureCall(uint32_t numBlocks, rtSmDesc_t *smDesc, rtStream_t stream);
  399. #endif
  400. #endif // __CLANG_CCE_RUNTIME_H__
  401. /**
  402. * @ingroup rt_kernel
  403. * @brief setup argment for next rtLaunch in current thread
  404. * @param [in] arg argment address for kernel function
  405. * @param [in] size argment size
  406. * @param [in] offset argment table offset
  407. * @return RT_ERROR_NONE for ok
  408. * @return RT_ERROR_INVALID_VALUE for error input
  409. */
  410. RTS_API rtError_t rtSetupArgument(const void *arg, uint32_t size, uint32_t offset);
  411. /**
  412. * @ingroup rt_kernel
  413. * @brief launch kernel to device with previous setting kernel argment
  414. * and call argment
  415. * @param [in] stubFunc stub function
  416. * @return RT_ERROR_NONE for ok
  417. * @return RT_ERROR_INVALID_VALUE for error input
  418. */
  419. RTS_API rtError_t rtLaunch(const void *stubFunc);
  420. /**
  421. * @ingroup rt_kernel
  422. * @brief implicitly transfered data to device.
  423. * lifecycle end after next kernel task finish
  424. * @param [in] ptr host memory
  425. * @param [in] size host memory size
  426. * @param [in] flag reserved. set to 0
  427. * @param [out] arg returned arg. used for next kernel's arg.
  428. * @return RT_ERROR_NONE for ok
  429. * @return RT_ERROR_INVALID_VALUE for error input
  430. */
  431. RTS_API rtError_t rtKernelConfigTransArg(const void *ptr, uint64_t size, uint32_t flag, void **arg);
  432. /**
  433. * @ingroup rt_kernel
  434. * @brief start fusion kernels.
  435. * @param [in] stream stream for fusion kernels
  436. * @return RT_ERROR_NONE for ok
  437. * @return RT_ERROR_INVALID_VALUE for error input
  438. */
  439. RTS_API rtError_t rtKernelFusionStart(rtStream_t stream);
  440. /**
  441. * @ingroup rt_kernel
  442. * @brief end fusion kernels.
  443. * @param [in] stream stream for fusion kernels
  444. * @return RT_ERROR_NONE for ok
  445. * @return RT_ERROR_INVALID_VALUE for error input
  446. */
  447. RTS_API rtError_t rtKernelFusionEnd(rtStream_t stream);
  448. /**
  449. * @ingroup rt_kernel
  450. * @brief set kernelinfo callback
  451. * @param [in] callback
  452. * @return RT_ERROR_NONE for ok
  453. * @return RT_ERROR_INVALID_VALUE for error input
  454. */
  455. RTS_API rtError_t rtSetKernelReportCallback(rtKernelReportCallback callBack);
  456. /**
  457. * @ingroup rt_kernel
  458. * @brief subscribe stream callback report.
  459. * @param [in] threadId thread id for stream
  460. * @param [in] stream stream for subscribe
  461. * @return RT_ERROR_NONE for ok
  462. * @return RT_ERROR_INVALID_VALUE for error input
  463. */
  464. RTS_API rtError_t rtSubscribeReport(uint64_t threadId, rtStream_t stream);
  465. /**
  466. * @ingroup rt_kernel
  467. * @brief add callback launch task in stream.
  468. * @param [in] callBackFunc app callback function
  469. * @param [in] fnData user data
  470. * @param [in] stream subscribed stream
  471. * @return RT_ERROR_NONE for ok
  472. * @return RT_ERROR_INVALID_VALUE for error input
  473. */
  474. RTS_API rtError_t rtCallbackLaunch(rtCallback_t callBackFunc, void *fnData, rtStream_t stream, bool isBlock);
  475. /**
  476. * @ingroup rt_kernel
  477. * @brief process callback report.
  478. * @param [in] timeout if timeout=-1, while(1); else timeout
  479. * @return RT_ERROR_NONE for ok
  480. * @return RT_ERROR_INVALID_VALUE for error input
  481. */
  482. RTS_API rtError_t rtProcessReport(int32_t timeout);
  483. /**
  484. * @ingroup rt_kernel
  485. * @brief unsubscribe callback report.
  486. * @param [in] threadId thread id for stream
  487. * @param [in] stream stream for subscribe
  488. * @return RT_ERROR_NONE for ok
  489. * @return RT_ERROR_INVALID_VALUE for error input
  490. */
  491. RTS_API rtError_t rtUnSubscribeReport(uint64_t threadId, rtStream_t stream);
  492. /**
  493. * @ingroup profiling_base
  494. * @brief start online prof.
  495. * @return RT_ERROR_NONE for ok
  496. * @return RT_ERROR_INVALID_VALUE for error input
  497. */
  498. RTS_API rtError_t rtStartOnlineProf(rtStream_t stream, uint32_t sampleNum);
  499. /**
  500. * @ingroup profiling_base
  501. * @brief stop online prof.
  502. * @return RT_ERROR_NONE for ok
  503. * @return RT_ERROR_INVALID_VALUE for error input
  504. */
  505. RTS_API rtError_t rtStopOnlineProf(rtStream_t stream);
  506. /**
  507. * @ingroup profiling_base
  508. * @brief get online prof.
  509. * @return RT_ERROR_NONE for ok
  510. * @return RT_ERROR_INVALID_VALUE for error input
  511. */
  512. RTS_API rtError_t rtGetOnlineProfData(rtStream_t stream, rtProfDataInfo_t *pProfData, uint32_t profDataNum);
  513. /**
  514. * @ingroup profiling_base
  515. * @brief start mdc profiler.
  516. * @return RT_ERROR_NONE for ok
  517. * @return RT_ERROR_INVALID_VALUE for error input
  518. */
  519. RTS_API rtError_t rtStartMDCProfiler(void **addr, uint32_t length);
  520. /**
  521. * @ingroup profiling_base
  522. * @brief stop mdc profiler.
  523. * @return RT_ERROR_NONE for ok
  524. * @return RT_ERROR_INVALID_VALUE for error input
  525. */
  526. RTS_API rtError_t rtStopMDCProfiler(void *addr);
  527. #if defined(__cplusplus) && !defined(COMPILE_OMG_PACKAGE)
  528. }
  529. #endif
  530. #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