Intel® Software Network

I’m looking for information sources on code optimization using the Intel CPU and the MMX/SSE family instruction set.

From what I have searched this group is the closest group to the subject of code optimization / vectorization.

Could someone recommend of:

1. A good reference book?
2. A relevant user group (within Intel Software Network or any external user group)

Thanks,

Avner

Undoubtedly, vectorization will be crucial to the application of AVX.  Your topic is still too broad.  You may be interested in compiler auto-vectorization with Fortran (vast on-line resources available) or C (similar, with more requirements, some resources available), or something else.  For example, the topic has been discussed frequently on the Intel compiler forum sites.

I’m interested in optimization for C++ code. I am using the Intel® 64 and IA-32 Architectures Software Developer's Manuals (5 volumes) for reference.

What I am looking for is a user group where I can post general SSE programming questions and see example source code. For example I want to know if there is a conditional statement equivalent to if/else in SSE, where I could condition intrinsic operations based on results in the registers.

Thanks,

Avner

SSE4 blend instructions implement if/else conditional moves, such as Fortran MERGE.  Prior to SSE4, the same operation could be implemented with masks.