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c++ Programming Glossary: secsWhy is my program slow when looping over exactly 8192 elements? http://stackoverflow.com/questions/12264970/why-is-my-program-slow-when-looping-over-exactly-8192-elements a multiple of 2048 e.g. the execution times SIZE 8191 3.44 secs SIZE 8192 7.20 secs SIZE 8193 3.18 secs The compiler is GCC... the execution times SIZE 8191 3.44 secs SIZE 8192 7.20 secs SIZE 8193 3.18 secs The compiler is GCC. From what I know this.. SIZE 8191 3.44 secs SIZE 8192 7.20 secs SIZE 8193 3.18 secs The compiler is GCC. From what I know this is because of memory..
http://stackoverflow.com/questions/13343874/boost-spirit-qi-slow a pretty solution but it works and it is much faster. 2.2 secs for 1 GB TCPH data multithreaded share improve this answer..
Why does gcc generate 15-20% faster code if I optimize for SIZE instead of speed? http://stackoverflow.com/questions/19470873/why-does-gcc-generate-15-20-faster-code-if-i-optimize-for-size-instead-of-speed to this fact. Assembly from gcc 4.6.4 Os executes in 0.709 secs 00000000004004d2 _ZL3addRKiS0_.isra.0 4004d2 8d 04 37 lea eax.. c3 ret Assembly from gcc 4.7.3 Os executes in 0.822 secs 00000000004004fa _ZL3addRKiS0_.isra.0 4004fa 8d 04 37 lea eax.. c3 ret Assembly from gcc 4.8.1 Os executes in 0.994 secs 00000000004004fd _ZL3addRKiS0_.isra.0 4004fd 8d 04 37 lea eax..
How to improve Visual C++ compilation times? http://stackoverflow.com/questions/2251212/how-to-improve-visual-c-compilation-times be parallelized on the 4 cores and takes around 1 min 10 secs. All 8 builds for 4 versions Debug Release 32 64 bits of the..
Blocking socket returns EAGAIN http://stackoverflow.com/questions/735249/blocking-socket-returns-eagain the EAGAIN's happen way more often than once every 30 secs. CORRECTION my debugging was flawed EAGAIN's don't happen as..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle 1.1 2.1 iterations sum omp_get_thread_num ret double secs omp_get_wtime start uint64 ops 48 1000 iterations tds 2 cout.. start uint64 ops 48 1000 iterations tds 2 cout Seconds secs endl cout FP Ops ops endl cout FLOPs ops secs endl double out.. cout Seconds secs endl cout FP Ops ops endl cout FLOPs ops secs endl double out 0 int c 0 while c tds out sum c cout sum out..
timespec equivalent for windows http://stackoverflow.com/questions/8583308/timespec-equivalent-for-windows on my machine the granularity of gettimeofday is about 15 msecs ~1 64 secs . Which is quite coarse. And so is the granularity.. the granularity of gettimeofday is about 15 msecs ~1 64 secs . Which is quite coarse. And so is the granularity of clock_t.. first . Also clock_getres CLOCK_REALTIME ... returns 15 msecs so clock_gettime is unlikely to help. And CLOCK_MONOTONIC and..
http://stackoverflow.com/questions/933122/socket-timeout-in-c-linux connect_alarm connect_alarm is you signal handler alarm secs secs is your timeout in seconds if connect fs addr addrlen 0.. connect_alarm is you signal handler alarm secs secs is your timeout in seconds if connect fs addr addrlen 0 if errno..
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