> Both cores are Linux capable, with full support for the RISC-V vector extension v1.0rc, (...) Are you sure that P550 is vector capable? The product page mentions it is a RV64GC ISA, which is missing the 'V' extension letter. On the other hand the P270 indeed is marked as RV64GCV ISA.
It's hard to see how a 3-wide dispatch core could approach the SPECint/GHz of a Cortex-A75, if it didn't have *some* kind of integer vector capability.
Especially since GCC's vectorization has improved significantly in recent years, which means higher SPEC scores for Cortex-A75. And without a vector unit it is rather easy to win on area...
Maybe. However I can't find anywhere on the SiFive website (or the slides in this article) any mention of the P550 supporting the V ISA extension (vector ops). The P550 product page (https://www.sifive.com/cores/performance-p550) mentions that this core is an evolution of U84. The SiFive blog post clearly distinguishes between U84 as a "high performance core" and U87 as "hugh performance core with vector processing" (https://www.sifive.com/blog/incredibly-scalable-hi... Hence my confusion. That said, perhaps the P550 would have some SiFive specific ISA extensions in the hint instruction space.
Life Jackets are obligatory for Swimmers and non Swimmers for all water sports exercises. Our camping area is very much covered up inside a wonderful wilderness without a doubt you will experience difficulty discovering it we https://www.treksandtrails.org/tours/igatpuri-secr... have kept it that way. Igatpuri Lakeside setting up camp is a lovely spot for scene photography.
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kda - Tuesday, June 22, 2021 - link
> Both cores are Linux capable, with full support for the RISC-V vector extension v1.0rc, (...)Are you sure that P550 is vector capable? The product page mentions it is a RV64GC ISA, which is missing the 'V' extension letter. On the other hand the P270 indeed is marked as RV64GCV ISA.
mode_13h - Wednesday, June 23, 2021 - link
It's hard to see how a 3-wide dispatch core could approach the SPECint/GHz of a Cortex-A75, if it didn't have *some* kind of integer vector capability.Wilco1 - Saturday, June 26, 2021 - link
Especially since GCC's vectorization has improved significantly in recent years, which means higher SPEC scores for Cortex-A75. And without a vector unit it is rather easy to win on area...kda - Tuesday, June 29, 2021 - link
Maybe. However I can't find anywhere on the SiFive website (or the slides in this article) any mention of the P550 supporting the V ISA extension (vector ops).The P550 product page (https://www.sifive.com/cores/performance-p550) mentions that this core is an evolution of U84. The SiFive blog post clearly distinguishes between U84 as a "high performance core" and U87 as "hugh performance core with vector processing" (https://www.sifive.com/blog/incredibly-scalable-hi... Hence my confusion.
That said, perhaps the P550 would have some SiFive specific ISA extensions in the hint instruction space.
mode_13h - Wednesday, June 30, 2021 - link
The consensus seems to be that it does *not* have vector ALU!campingandwatersports - Monday, July 5, 2021 - link
Life Jackets are obligatory for Swimmers and non Swimmers for all water sports exercises. Our camping area is very much covered up inside a wonderful wilderness without a doubt you will experience difficulty discovering it we https://www.treksandtrails.org/tours/igatpuri-secr... have kept it that way. Igatpuri Lakeside setting up camp is a lovely spot for scene photography.mode_13h - Wednesday, July 7, 2021 - link
spammerdenisfrancis - Wednesday, January 19, 2022 - link
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