Tensor ndi RT cores satenga malo ambiri pa NVIDIA Turing GPUs

Ngakhale pakulengezedwa kwa makhadi oyamba a kanema a GeForce RTX 20, ambiri amakhulupirira kuti ma Turing GPU alibe ngongole yaying'ono chifukwa chokhala ndi mayunitsi owonjezera: ma RT cores ndi tensor cores. Tsopano, wogwiritsa ntchito m'modzi wa Reddit adasanthula zithunzi za infrared za Turing TU106 ndi TU116 GPUs ndipo adatsimikiza kuti zida zatsopano zamakompyuta sizitenga malo ochulukirapo monga momwe amaganizira poyamba.

Poyamba, tiyeni tikumbukire kuti Turing TU106 GPU ndiye chipangizo chaching'ono kwambiri komanso chophatikizika kwambiri cha NVIDIA chokhala ndi zida zapadera za RT zotsata ma ray ndi ma tensor cores kuti apititse patsogolo ntchito zanzeru zopanga. Momwemonso, purosesa yazithunzi za Turing TU116, zomwe zimagwirizana nazo, zimachotsedwa mayunitsi apadera apakompyuta ndipo chifukwa chake adaganiza zowafanizira.

Ma NVIDIA Turing GPU amagawidwa m'magawo a TPC, omwe amaphatikiza ma multiprocessors (Streaming Multiprocessors), omwe amaphatikiza kale ma cores onse apakompyuta. Ndipo momwe zikuwonekera, Turing TU106 GPU ili ndi 1,95 mm² malo ambiri a TPC kuposa Turing TU116, kapena 22%. Paderali, 1,25 mm² ndi ma tensor cores, ndipo 0,7 mm² okha ndi a RT cores.

Zinapezeka kuti popanda tensor yatsopano ndi RT cores, purosesa yazithunzi za Turing TU102, yomwe ili pansi pa GeForce RTX 2080 Ti, singakhale 754 mm², koma 684 mm² (36 TPC). Nayenso, Turing TU104, yomwe ili maziko a GeForce RTX 2080, ikhoza kutenga 498 mm² m'malo mwa 545 mm² (24 TPC). Monga mukuwonera, ngakhale opanda ma tensor ndi RT cores, ma Turing GPU akale angakhale tchipisi tambiri. Zambiri za Pascal GPUs.

Ndiye n'chifukwa chiyani kukula kwakukulu koteroko? Poyambira, ma Turing GPU akhala ndi ma cache akuluakulu. Kukula kwa ma shaders nawonso kwakulitsidwa, ndipo tchipisi ta Turing tili ndi ma seti akulu akulu ndi zolembera zazikulu. Zonsezi zidapangitsa kuti ziwonjezeke kwambiri osati dera lokha, komanso magwiridwe antchito a Turing GPUs. Mwachitsanzo, GeForce RTX 2060 yomweyo yochokera ku TU106 imapereka pafupifupi mulingo wofanana ndi GeForce GTX 1080 yotengera GP104. Chotsatiracho, mwa njira, chili ndi 25% chiwerengero chachikulu cha CUDA cores, ngakhale chili ndi dera la 314 mm2 motsutsana ndi 410 mm2 pa TU106 yatsopano. 

Source: 3dnews.ru