9 More Discussions You Might Find Interesting
1. Programming
hi,
I have two basic questions, I will be really grateful if I receive any
comment from you,
I have an MPI code where I am trying to implement OpenMP directives.
The machine where I run the code has 16 cores. I run the code with
export OMP_NUM_THREADS=2
mpirun -np 4 ./exec
If I... (0 Replies)
Discussion started by: armando_2011
0 Replies
2. Programming
I am using a large code-base that compiled successfully before using make with a makefile and cmake. However, now that I'm trying to use openmp with it, I'm now getting the errors
undefined reference to `omp_get_thread_num'
undefined reference to `omp_get_num_threads'I don't think this... (0 Replies)
Discussion started by: larry burns
0 Replies
3. Programming
Dear Linux users,
I'm a noob at openmp, gcc and c programming. I can run my own openmp code in terminal with no problem, eg. gcc -fopenmp program.c -o program.
But now I'm trying to compile and run another person's code, it contains a makefile and multiple .c and .h files. I don't know how to... (2 Replies)
Discussion started by: pigeon151
2 Replies
4. HP-UX
Hi folks,
I am trying to run more than 8 threads in OpenMP team on my HP-UX 11i v3 system (without root access), but NO success.
Compiler: aCC A.06.26
I tried to setup: OMP_NUM_THREADS, omp_set_num_threads(), max_thread_proc=1000, nkthread=8416, set_dynamic=0
Machine has 2 processors... (1 Reply)
Discussion started by: ATveretinov
1 Replies
5. UNIX for Advanced & Expert Users
I wonder if someone knows what is the rationale behind linking function calls of the POSIX threads library at link-time vs. run-time.
For example, if I create the following program:
#include <pthread.h>
void noop() {
return;
}
int main() {
pthread_self();
pthread_atfork(noop,... (1 Reply)
Discussion started by: jsimsa
1 Replies
6. Programming
Hi,
I am new to posix threads. The no of threads to be created depends on the runtime. If I get the number of threads,
I need to forward declare
pthread_t mythread;
how to do that can I use pointers and use malloc()??
I also have another question. The pthread_join is used to make... (0 Replies)
Discussion started by: brett01
0 Replies
7. UNIX for Advanced & Expert Users
Hi,
consider the code below:
#include <stdio.h>
.
.
struct myStruct
{
char *message ;
int id;
};
.
.
.
void *thread_function( void *ptr );
nt main()
{
pthread_t thread1, thread2 ,thread3 ;
struct myStruct nico1; (2 Replies)
Discussion started by: Behnaz
2 Replies
8. Programming
I created multiple POSIX threads (on readhat Linux) in a C program in my app. What I am doing is - I am creating threads equal to the number of CPUs in the system and and equal number of instances of a certain data structure, basically a queue implementation. I am assigning one ID to the thread... (2 Replies)
Discussion started by: radiatejava
2 Replies
9. Programming
Hello !
Let's supose I have a main function in C , and two POSIX threads. I give you an example down :
int main() {
int something;
char else;
void *FirstThread();
void *SecondThread();
..
<start those two pthreads ..>
return 0;}
void *FirstThread() { ... }
void *SecondThread()... (2 Replies)
Discussion started by: !_30
2 Replies
Portable Threads Abstraction Classes(3) Coin Portable Threads Abstraction Classes(3)
NAME
Portable Threads Abstraction Classes -
Classes
class SbBarrier
The SbBarrier class implements the 'barrier' multi-thread synchronization technique.
A barrier is a synchronization mechanism that is used for blocking threads as they enter the barrier until a given number of threads are
blocked, at which point all the threads are released again. "
class SbCondVar
A class for synchronizing access to global variables.
Condition variables are used to protect global variables in an environment where multiple threads are running concurrently. "
class SbFifo
A class for managing a pointer first-in, first-out queue.
class SbMutex
A basic class for managing a mutex.
This class provides a portable framework around the mutex interface of the underlying native thread-handling toolkit. "
class SbThreadAutoLock
Simple convenience class for locking access to a function.
This class provides a simple convenience mechanism for automatically locking access to a function that is not re-entrant. "
class SbRWMutex
class SbStorage
The SbStorage class manages thread-local memory.
This class manages thread-local memory. When different threads access the memory an SbStorage object manages, they will receive different
memory blocks back. "
class SbTypedStorage< Type >
The SbTypedStorage class manages generic thread-local memory.
This class manages thread-local memory. When different threads access the memory an SbTypedStorage object manages, they will receive
different memory blocks back. "
class SbThread
A class for managing threads.
This class provides a portable framework around the tasks of instantiating, starting, stopping and joining threads. "
Detailed Description
Coin implements a set of abstractions over the native threads data types that can be portably used across all the platforms Coin has been
ported to.
Author
Generated automatically by Doxygen for Coin from the source code.
Version 3.1.3 Wed May 23 2012 Portable Threads Abstraction Classes(3)