Should I use C or matlab? - 未名空间MITBBS历史存档

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Should I use C or matlab?

Should I use C or matlab?# Computation - 科学计算

g*n2007-09-29 07:09

1 楼

Hi,folks:
I am running a very computationally intensive Monte-Carlo Markov Chain
algorithm using R, but it seemed extremely slow. I know if I rewrite the
program in C, the efficiency will be improved a gread deal, however, it
might be easier for me to rewrite in matlab than C. Is there a significant
difference in efficiency between C and matlab for running MCMC program?
Thanks.

L*g2007-09-29 07:09

2 楼

I think it'll be faster in C.

【在 g******n 的大作中提到】

: Hi,folks:
: I am running a very computationally intensive Monte-Carlo Markov Chain
: algorithm using R, but it seemed extremely slow. I know if I rewrite the
: program in C, the efficiency will be improved a gread deal, however, it
: might be easier for me to rewrite in matlab than C. Is there a significant
: difference in efficiency between C and matlab for running MCMC program?
: Thanks.

m*e2007-09-29 07:09

3 楼

Unless you have exactly what is needed to be done and if you have to check
and debug your C code. Matlab is very efficient already and has plenty of
built-in functions. Getting a new CPU would help too.

L*g2007-09-29 07:09

4 楼

If you want to run your code on a cluster, you definitely want to use C.

k*n2007-09-29 07:09

5 楼

For matrix computations intensive codes, Matlab could be as fast as C.

s*b2007-09-29 07:09

6 楼

agree,by the way, how fast can atlas provide gcc in general?

【在 k******n 的大作中提到】

: For matrix computations intensive codes, Matlab could be as fast as C.

k*n2007-09-29 07:09

7 楼

Sometimes, ATLAS could achieve more than 10x performance than naively
compiled BLAS.

【在 s**b 的大作中提到】

: agree,by the way, how fast can atlas provide gcc in general?

s*b2007-09-29 07:09

8 楼

that's great, worth take a try

【在 k******n 的大作中提到】

: Sometimes, ATLAS could achieve more than 10x performance than naively
: compiled BLAS.

M*e2007-09-29 07:09

9 楼

http://www.interactivesupercomputing.com/products/
Star-P software is a client-server parallel-computing platform that’s been
designed to work with multiple Very High Level Language (VHLL) client
applications such as MATLAB®, Python, or R, and has built-in tools to
expand VHLL computing capability through addition of libraries and hardware-
based accelerators.
某一天看到了，觉得如果有条件可以看看