[sage-support] Inverses of Large Sparse Matrices

2010-04-11 Thread William Stein
On Sunday, April 11, 2010, Leo Maloney wrote: > When I try to make a dense matrix, I get a "MemoryError: out of memory > allocating a matrix."  I was able to output my matrix into a .txt file > and tweak it to be read into Matlab.  Matlab was able to compute it > pretty quickly, so I feel like it

Re: [sage-support] Inverses of Large Sparse Matrices

2010-04-09 Thread William Stein
On Friday, April 9, 2010, Alec Mihailovs wrote: > On Apr 9, 1:53 pm, Leo Maloney wrote: >> I'm trying to compute the inverse of a 5000 x 5000 sparse matrix.  I'm >> getting an EOF error after it runs for about 5 hours, and then it >> states that sage is trying to access unallocated memory.  Is th

Re: [sage-support] Inverses of Large Sparse Matrices

2010-04-09 Thread William Stein
On Friday, April 9, 2010, Leo Maloney wrote: > My Matrix consists of zeros ones, and -1/9s, so I was intially > computing it over Q.  I'm trying to re-run the program over R in hopes > that it will use approximations rather than try to explicitly state > the fractions.  I am using a Macintosh OSX

Re: [sage-support] Inverses of Large Sparse Matrices

2010-04-09 Thread Robert Bradshaw
On Apr 9, 2010, at 10:53 AM, Leo Maloney wrote: I'm trying to compute the inverse of a 5000 x 5000 sparse matrix. What is the basering? I'm getting an EOF error after it runs for about 5 hours, and then it states that sage is trying to access unallocated memory. Is there a way I can increas

[sage-support] Inverses of Large Sparse Matrices

2010-04-09 Thread Leo Maloney
I'm trying to compute the inverse of a 5000 x 5000 sparse matrix. I'm getting an EOF error after it runs for about 5 hours, and then it states that sage is trying to access unallocated memory. Is there a way I can increase the memory for this computation? Every time I Google it, all I can find i