Is there a way to get the serial elision of the Cilk c program? This was a nice option in Cilk Arts.
When and why do you underscore precedingcilk_spawn and cilk_for in Intel Cilk ? It seems that it is rare but at times the statements listed above must be precded by an underscore.
Any help appreciated.
Newport_j
Using the gcc cilkplus branch, I consistently get a segmentation fault for a very simple example with a cilk_for loop:
#include
void do_work(int i)
{ }int main(int argc, char* argv[])
{
int n = 10;cilk_for(int i = 0; i != n; ++i)
{
do_work(i);
}
}
but if I add a dummy cilk_spawn/cilk_sync to that example, it starts to work as expected:
#include
void dummy()
{ }void do_work(int i)
{ }
Igot the following error mesage when I compiled my code with icc.
InitializeScenarioData.c (192) error: Cilk_for initilization must be a declaration
cilk_for ( j = 0; j < (*Env).nz_SSP[i]; j+1 ) {
^
I declared j as an integer. I also am using i (also declared as an integer) it is initialized and declared. Why am I getting this error?
Thanx in advance.
Newport_j
Istarted to cilkify my program with an error serial program. I took the line that said
int main()
and changed it to
int cilk_main()
I also aded the include file
cilk.h this way
include
Iadded the line at the bottom of my include file list for the main function. I am not sure why I must precede it by
cilk/
,but I did.
I then got the error
ld: /usr/lib/debug/usr/lib/i386-linux-gnu/crtl1.o(.debug_info): relocation 0 has invalid symbol index 12
several more lines similar
I finally got my application to compile with icc, not just gcc. However, when I went to check it withprograms like cilkscreen and cilkview it says cilkscreen and cilkview not found.
I tried the Ubuntu file search and I did not find any files with cilkscreen or cilkview as root. I beleive that it must be a path problem, but I do not know where cilkscreen and cilkview files are located. Can you please tell me where?
Thanks in advance.
Newport_j
I'm looking forward to using the SIMD vectorization language extension in Cilk within a frame work that is (already) using TBB for threading.
Are there any conflicts between Cilk and TBB, even if I'm not planning to use any of the parallel programming constructs of Cilk?
Is using Cilk to heavy handed to just get the SIMD vectorization extensions?
Thanks.
Iam having trouble with the icc math.h file and compiling with icc. It seems not to be able to find the math.h file and creates errors as shown.
I used the command
./test1.sh 1> out.txt 2> err46.txt.
I also used the -H compiler command and it seems to be pulling the math.h file in, but stillI am getting errors as shown in err46.txt.
At one point I actually put the Intel icc version of math.h in the same directory as test3.c and it still did not find it.
I need help on this one. Why can it not find my math.h file.
I am assuming that when you compile with icc you must use the icc equivalent include file. There seems to be onlyone that hasthe samename
math.h
now which should I use. The gcc one or the icc one? I would think that I should use the icc one.
Any help appreciated.
Newport_j
If a programmer removes stdio.h in source code that he compiles with icc, then how is
FILE *fid
fprintfid,"FREQ = ");
handled? we obviuosly want to print this into a file not to the screen, but by removing
stdio.h we cannot do it.
Again, theis works fine in gcc, not so fine in icc.
Any help appreciated.
Newport_j
Hello,
I call the header file on my header file test.h to lock and unlock sections of code.
And in the file write.cpp, i need to lock and unlock sections of code too. so, i call the test.h file which call the fake_mutex.h.
but when compiling, i have the error of multiple definition `cilkscreen::create_fake_mutex()' as following :
...: In function `cilkscreen::create_fake_mutex()':
...: multiple definition of `cilkscreen::create_fake_mutex()'
...:/home/amina/projet/cilkplus-install/include/cilktools/fake_mutex.h:79: first defined here
....
