Displaying 3 results from an estimated 3 matches for "libgoto".
2006 Feb 23
2
Problems building R 2.2.1 with libgoto and SSE2 enabled
Hi,
I am trying to build R 2.2.1 with Kazushige Goto's BLAS library (libgoto) and
encountered a problem: I have two computers with the almost identical
hardware (P4 Northwood CPU, i875 chipset, 2GB DDR400 RAM) and identical Linux
OS. I have the latest version of libgoto for this CPU installed on both boxes
(libgoto_northwood32p-r1.00.so) and I am using gcc compiler flag...
2005 Jun 12
2
linking R to goto blas
Dear all,
I am currently trying to link R 2.1.0 to the GOTO BLAS 0.99.3 library on
a box running Fedora Core 3 , basically following the steps indicated in
the R-Admin document:
1: I downloaded the current libgoto.xxx.so from
http://www.cs.utexas.edu/users/kgoto/libraries/libgoto_prescott-32-r0.99-3.so.gz,
a version suitable for our XEON machine (Nocona core), unpacked it to
/usr/lib and created a symlink libgoto.so pointing to the library.
2: Then, I got ready to re-configure and re-compile R (2.1.0) using...
2003 Nov 26
0
RE: 64-bit R on Opteron [was Re: [R] Windows R 1.8.0 hangs when M em Usage >1.8GB]
...for Opteron (see below). The result
looks like:
> mm = matrix(rnorm(1e6), nc = 1e3)
> system.time(crossprod(mm))
[1] 0.5 0.0 0.5 0.0 0.0
> system.time(crossprod(mm))
[1] 0.39 0.00 0.39 0.00 0.00
> system.time(crossprod(mm))
[1] 0.39 0.01 0.39 0.00 0.00
On the dual 2.4GHz Xeon (using libgoto_p3_512-r0.6.so), I get:
> mm = matrix(rnorm(1e6), nc=1e3)
> system.time(crossprod(mm))
[1] 0.91 0.01 0.93 0.00 0.00
> system.time(crossprod(mm))
[1] 0.82 0.02 0.84 0.00 0.00
> system.time(crossprod(mm))
[1] 0.83 0.02 0.85 0.00 0.00
We have not found the Opteron to be faster than the X...