I had to install gcc-fortran, blas and lapack this morning just to compile an "octave" package, a kind of open-source Matlab, to run some setiquest programs. All went fine but I must install also gnuplot.
Tullio

"kinda like" I once took a quick look through a book which claimed to be a guide for learning both Matlab and Octave. There was exactly one page on the two or three differences. One was the Octave could take both single and double quotes to the same meaning. Since then I have been wondering if MATLAB was other than a repackaged Octave sort of like Redhat's Enterprise v Fedora releases.

For the current Einstein app it's not of much use to discuss GPU performance, as it uses only a rather small fraction of the GPU anyway. You can use one GPU for several instances of this app (see the other current thread), so adding more GPUs is nor really going to help (unless you've got really many cores, say a Quad AMD 12 core or so). You need a mid to high end GPU though, in order not to slow down the CPU. The slower the CPU the slower the GPU can be.
...

MrS

The only help that was was to outline what I have to learn to talk on this subject coherently -- I hope. Thanks for the time.

What I can add at this moment is the motherboards used by HP with nVidia chips are not recognized by the benchmark test and so are not used.

Since then I have been wondering if MATLAB was other than a repackaged Octave sort of like Redhat's Enterprise v Fedora releases.

No. Octave takes the basic language elements of Matlab, omits the graphical part (not sure how much it can do here) and distributes it for free. Matlab is much more than that.

I've compiled the 3.3.52 version of Octave, which is a development version, and added gnuplot, which I already knew. Now I must find what to do with it. I've been visiting the www.setiquest.org site but my programmer's skills are not up to what they look for.
Tullio

Since then I have been wondering if MATLAB was other than a repackaged Octave sort of like Redhat's Enterprise v Fedora releases.

No. Octave takes the basic language elements of Matlab, omits the graphical part (not sure how much it can do here) and distributes it for free. Matlab is much more than that.

MrS

Never used Octave -- one of those things I'd like to play with some day. Also a pirate copy of Matlab (I did not say that. I was not here.) but never played with that either. Love the idea of same syntax though should I find a use for it. What little math I fool with these days is not amenable to standard formulations -- such as animation paths and near field radiation patterns. Luckily retirement does not require me to produce anything on schedule.

Anyway, I have baselines for two of my three machines but want to install the nVidia card in the one still without a baseline -- just added it 16 days ago -- as it is the fastest CPU clock and with four Athlon II cores. I expect to be impressed enough to buy GPU cards for the other two machines but I want to see the baseline change when I do it.

BTW: Has there been any reasonable suggestion as to why mobo nVidia chips to not register?

The 'Mat' in Matlab is 'matrix', so especially suits mathematical problems expressible in such terms. But one can still do many things you wouldn't immediately consider matrix-like. After all a real scalar is a 1 x 1 matrix. I find it way less daunting than Mathematica, which is somewhat 'uber' by comparison ( cost notably ). The graphical part of Matlab is gorgeous ...... :-)

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter.Blaise Pascal

In LOGO a scalar is a list with one element, a vector is a list with two or more elements,a matrix is a list of lists. Too bad it is slow, being an interpreted language.
Tullio

I expect to be impressed enough to buy GPU cards for the other two machines but I want to see the baseline change when I do it.

What do you mean by baseline? And don't expect much from the current Einstein CUDA V2 app.

I mean I want to see what I get as an RAC before attempting to increase its performance. That way I hope to get a feel for what the improvement is worth. I also intend to look into cost/performance eventually as in does a $100 card to most of what two cards in crossfire or not. In other words to find a point of diminishing returns.

Quote:

Quote:

BTW: Has there been any reasonable suggestion as to why mobo nVidia chips to not register?

What do you mean by "to not register"?

MrS

I meant Do not register. I have nVidia chips on the mobo of one machine but the test of the computer replies "no GPUs" and thus are not used.

## RE: I had to install

)

"kinda like" I once took a quick look through a book which claimed to be a guide for learning both Matlab and Octave. There was exactly one page on the two or three differences. One was the Octave could take both single and double quotes to the same meaning. Since then I have been wondering if MATLAB was other than a repackaged Octave sort of like Redhat's Enterprise v Fedora releases.

## RE: @Matt: the simple

)

The only help that was was to outline what I have to learn to talk on this subject coherently -- I hope. Thanks for the time.

What I can add at this moment is the motherboards used by HP with nVidia chips are not recognized by the benchmark test and so are not used.

## RE: Since then I have been

)

No. Octave takes the basic language elements of Matlab, omits the graphical part (not sure how much it can do here) and distributes it for free. Matlab is much more than that.

MrS

Scanning for our furry friends since Jan 2002

## Octave uses gnuplot for

)

Octave uses gnuplot for graphics, and is pretty Matlab-compatible by now.

CU

HBE

## I've compiled the 3.3.52

)

I've compiled the 3.3.52 version of Octave, which is a development version, and added gnuplot, which I already knew. Now I must find what to do with it. I've been visiting the www.setiquest.org site but my programmer's skills are not up to what they look for.

Tullio

## RE: RE: Since then I have

)

Never used Octave -- one of those things I'd like to play with some day. Also a pirate copy of Matlab (I did not say that. I was not here.) but never played with that either. Love the idea of same syntax though should I find a use for it. What little math I fool with these days is not amenable to standard formulations -- such as animation paths and near field radiation patterns. Luckily retirement does not require me to produce anything on schedule.

Anyway, I have baselines for two of my three machines but want to install the nVidia card in the one still without a baseline -- just added it 16 days ago -- as it is the fastest CPU clock and with four Athlon II cores. I expect to be impressed enough to buy GPU cards for the other two machines but I want to see the baseline change when I do it.

BTW: Has there been any reasonable suggestion as to why mobo nVidia chips to not register?

## The 'Mat' in Matlab is

)

The 'Mat' in Matlab is 'matrix', so especially suits mathematical problems expressible in such terms. But one can still do many things you wouldn't immediately consider matrix-like. After all a real scalar is a 1 x 1 matrix. I find it way less daunting than Mathematica, which is somewhat 'uber' by comparison ( cost notably ). The graphical part of Matlab is gorgeous ...... :-)

Cheers, Mike.

I have made this letter longer than usual because I lack the time to make it shorter. Blaise Pascal

## In LOGO a scalar is a list

)

In LOGO a scalar is a list with one element, a vector is a list with two or more elements,a matrix is a list of lists. Too bad it is slow, being an interpreted language.

Tullio

## RE: I expect to be

)

What do you mean by baseline? And don't expect much from the current Einstein CUDA V2 app.

What do you mean by "to not register"?

MrS

Scanning for our furry friends since Jan 2002

## RE: RE: I expect to be

)

I mean I want to see what I get as an RAC before attempting to increase its performance. That way I hope to get a feel for what the improvement is worth. I also intend to look into cost/performance eventually as in does a $100 card to most of what two cards in crossfire or not. In other words to find a point of diminishing returns.

I meant Do not register. I have nVidia chips on the mobo of one machine but the test of the computer replies "no GPUs" and thus are not used.