Evan Nemerson

@nemequ

@[email protected]

evan.nemerson.com

Joined October 2007

Evan Nemerson
@nemequ
Jun 28, 2021
I made some documentation for #WebAssembly SIMD, sort of an intrinsics guide but more. There is documentation for instructions, intrinsics, and WAV functions, plus lots of timing information for different architectures.
nemequ.github.io
WebAssembly SIMD Programming Reference
Documentation of WASM SIMD functionality and performance on multiple architectures, including instructions, intrinsics, and WAV functions.
Evan Nemerson
@nemequ
Jun 3, 2021
Does anyone know of a project using NEON intrinsics which might be interested in a port to, well, everything other than Arm (e.g., WebAssembly)? We're looking for goals to help set priorities for implementing the remaining NEON functions in SIMDe…
Evan Nemerson
@nemequ
May 4, 2021
New blog* post: Portability is Reliability: evan.nemerson.com/2021/05/04/por… * Yes, I have a blog, I just haven't posted in ~ 6 years :)
evan.nemerson.com
Portability is Reliability
Anyone familiar with my open source work knows that a major focus of my work is on portability, but it recently occurred to me that a lot of people probably don’t know why. For example, some …
Evan Nemerson
@nemequ
Apr 27, 2021
The portable implementation of SVE in SIMDe is working out better than I expected. Lots of API to left cover, but the infrastructure in place now is pretty solid so that can proceed relatively quickly. @CompileExplore link if anyone wants to play with it:
godbolt.org
Compiler Explorer - C++
/* SIMD Everywhere * https://github.com/nemequ/simde/ * * SIMDe contains implementations of SIMD instruction sets * for systems which don't support them natively. * * For more information, please see...
Evan Nemerson
@nemequ
Apr 21, 2021
Fujitsu's A64FX Microarchitecture Manual has lots of interesting details: raw.githubusercontent.com/fujitsu/A64FX/… A64FX is, AFAIK, the only production CPU which supports SVE. I also don't usually see this much public detail about Arm CPUs.