| ▲ | brucehoult 3 hours ago | |
Don't forget the 128 bit vector ISA with 32 registers, supporting up to 64 bit int and FP, and with LMUL=8 you can process 1024 bits with a single instruction (at 3 cycles per 128 bits for most operations). Fully supported by GCC and CLANG (xTHeadVector) and compatible with RVV 1.0 with just a command line switch if you use the C intrinsic functions. (a lot of code working on 8 bit elements is binary compatible with RVV 1.0 too e.g. typical memcpy(), memset(), memcmp(), strlen(), strcpy(), strcmp()) When I bought my 64 MB Duo they were $3! Then for a long time they were $5 for the 64 MB, $7 for the 256 MB, and $10 for the 512 MB. Sadly, like everything else, they've gone up considerably this year. | ||