I've done more searching and found a problem with the data in one of the
matrices that was corrupting the calculation. Data now fixed and problem
is solved. Apologies if anyone wasted time on this.
Ken
On Fri, Jan 27, 2017 at 8:29 AM, Jeff Newmiller
wrote:
> You are asked by the Posting Guide
You are asked by the Posting Guide to provide a reproducible example and to
post in plain text (because HTML gets mangled). I would guess your problem has
nothing to do with multiplication, but without the code there is no way to say
for sure.
--
Sent from my phone. Please excuse my brevity.
Hi all. A question about performance of matrix multiplication.
I have two relatively large matrices:
A is 100x3072, all integers 0-255, not sparse
B is 1016x3072, all integers 0-255, not sparse
The command z<-B %*% t(A) works fine and takes roughly 0.2 seconds . If I
add one row to B, t
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