2010年8月6日 · This is basically that Intel IPP library apparentely misdetects SSE4.1 or SSE4.2 instruction set on the AMD processors with SSE4A instruction set (when dispatching), which seems to crach some code parts (incorrect code execution). As I know, the previous IPP library (5.3) had an opportunity just to enable/disable optimization at all.

2013年2月21日 · SSE4a is a set of only two AMD-specific instructions (they did not support SSE4.1 at that time). SSE4.2 added string processing instructions. AVX extends the SSE registers to 256-bit, and offers 256-bit floating-point operations. Other AVX instructions are still limited to 128-bit.

2008年8月1日 · Hi, You are correct with your assumings. Here are some details: "Intel Streaming SIMD Extensions 4 (SSE4) introduces 54 new instructions in Intel 64 processors made from 45 nm process technology.

2010年8月11日 · Another suggestion: write code to verify which IPP library was used. Call ippiGetLibVersion() and print that. Another idea: if 10% increase is all you get, it could be because you run on a single-core HT-enabled CPU. Running …

2010年8月26日 · I noted that on my Intel NH and AMD GH platforms.. the cpuid detection of sse 4.2 support is not found on AMD but is found on NH systems. I didn't know if you were aware of this.. does emulation of these instructions only occur upon systems with HW sse 4.2 support. I looked in the documentation and ...

2017年11月1日 · I hope that this is a simple question: Which compiler flags should i use to get the best performance out of an AMD Epyc processor (particularly for MPI and OpenMP codes)? I know which instruction sets it is theoretically capable of. But since there were "problems" in the past where the intel compile...

2010年1月23日 · Use hardware-based isolation and memory encryption to provide more code protection in your solutions.

2022年2月11日 · My question is if the processor Intel Xeon CPU E5-2620 v3 @ 2.40GHz supports or not SSE 4.2. .. Thank you guys for your kind answers

2010年6月15日 · This was not the kind of information I was looking for. I've used this instruction for a while now and thus, I know that it is SSE4.2 or SSE4a on AMD. In fact, just have to look for the POPCNT flag in CPUID...

2015年2月5日 · The current Intel Fortran manual contains "-nofor-main" in some places and "-nofor_main" in other places. The spelling actually used may have been different for different versions of the Linux and OSX IFort compilers.