[GAP Forum] Problem with TransposedMat

[Gábor Nagy]

Dear Forum,

When trying to transpose large matrices with TransposedMat(), GAP4 often 
runs out of memory, even if I start it with a workspace size of 300M.

The matrices we have been working were:

a) approx. 16.000 x 15.000 binary matrix over GF(2), and

b) 6.500 x 6.500 square matrix with elements from [1..6500].

Then we wrote some trivial function to invert the matrix simply using 
for-do cycles and it was no problem for GAP.

Can anybody explain this behaviour?

Thank you in advance,

Gabor Nagy