It appears that the revoluton-mkl package, available via the multiverse
Ubuntu repository with the purpose of adding multi-threaded numeric
libraries to R, is not function correctly with R 2.13 (at least the
version found on CRAN). Testing with "R-benchmark-25.R" (found at
http://r.research.att.com/benchmarks/), I get the following error, after
installing the revolution-mkl package (4 core, AMD processor, 11.04
64-bit Ubuntu):
> source("R-benchmark-25.R")
Loading required package: Matrix
Loading required package: lattice
Attaching package: 'Matrix'
The following object(s) are masked from 'package:base':
det
Loading required package: SuppDists
R Benchmark 2.5
===============
Number of times each test is run__________________________: 3
I. Matrix calculation
---------------------
Creation, transp., deformation of a 2500x2500 matrix (sec): 1.237
2400x2400 normal distributed random matrix ^1000____ (sec):
0.861333333333333
Sorting of 7,000,000 random values__________________ (sec):
1.09133333333333
2800x2800 cross-product matrix (b = a' * a)_________ (sec):
1.55633333333333
Error in solve(crossprod(a), crossprod(a, b)) :
the leading minor of order 1271 is not positive definite
Timing stopped at: 2.55 0.04 0.729
I was also unable to exit from R cleanly. I tried R-benchmark-25.R
without the SuppDists package, and the same error occurred.
In a virtual machine, I rolled back R to version 2.12.1, the version
found in the main Ubuntu repository, and R-benchmark-25.R worked without
error. So it appears that rolling back R to 2.12.1 may be a solution (R
2.12 is no longer available as a deb on CRAN).
I have not tested the GOTOBlas2 libraries. Ian Fellows mentions issues
on the Mac side of things
(http://groups.google.com/group/deducer/browse_thread/thread/8c9a8af0465f9b9b),
although I am not sure if this applicable as Ubuntu 11.04 is based on
gcc 4.5.
If anyone has the revolution-mkl package working with R 2.13 or has
tested the GOTOBlas2 libraries, please let me know.
Michael
--
Dr. Michael A. Rutter
School of Science
Penn State Erie, The Behrend College
Station Road
Erie, PA 16563
http://math.bd.psu.edu/faculty/rutter
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