SIMD tuning with ASM pt. 3 - PS good, SS bad
If you recall where we left off on my post yesterday we compiled a test program with gcc and saw this code for the 'working' part of a loop. (Yes, I will be getting to the Intel C++ compiler next...
View ArticleSIMD tuning with ASM pt. 4 - Vectorization & ICC
If you remember from my first post I presented a program. Stripping out the setup, the part we care about - the part that does the work - is this: float x[PTS], float y[PTS]; for (int i = 0; i <...
View ArticleSIMD tuning with ASM pt. 2 - Your First Dump
(here's part 1 in case you missed it) Let's take a really, really simple program. It just adds one array of things to another. This should be a SIMD slam dunk! I will call this program blah.cpp...
View ArticleSIMD tuning with ASM pt. 1 - Stars & Constellations
ASM? You mean assembly language? I haven't looked at that since my senior project! How arcane! And compilers are so smart anymore, why should I care? I used to feel the same way...albeit with a latent...
View ArticleTips: Call Graph and launching scripts...
Sprache Englisch In the current version, 3.0, when using the Call Graph collector to collect data on an application that is started by a script, you need to make sure the application and the directory...
View ArticleDebugging Address Error
Sprache Englisch Folks,Its taken me about 3 weeks of 'piddling' work to make my 6,000 line program, which is 100% F95 and runs just fine under CVF, compile under ifl. Now, when I execute it, it throws...
View Articlecompilation problem with ifort in openmp
Sprache Englisch hi everybody, i am learning openmp programming now. my problem is with compilation the code.i use noncomercial version of ifort and iccif i use ifort to compile the code i get a error...
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