jm@france-paris.org

Dr. Jean-Michel Collard

220 Reputation

9 Badges

17 years, 214 days

MaplePrimes Activity


These are questions asked by jm@france-paris.org

First sorry I didn't "invent" this series.It comes from another newsgroup which I will not tell.

It is irrelevant.

My question is twofold :

How to prove it with pen and paper that it diverges

How to prove it with Maple.

Maple seems very...quiet with this series.

Thanks a lot.

Kind regards to all

Jean-Michel

Hello all,

Is there a special e-mail address for MaplePrimes' support or is it just support@maplesoft.com.

Thank you very much

All the best

Hello,

I encounter the same error for upgrading the physics package

which was never solved for Maple 2020 !

See the screenshot.

This is again a problem of permission.

Best

``

Examples

 

n := 4000

M1 := LinearAlgebra:-RandomMatrix(n, n, datatype = float[4])

M2 := LinearAlgebra:-RandomMatrix(n, n, datatype = float[4])

CUDA:-IsEnabled()

false

(1.1)

tNoCUDA := time[real](M1.M2)

1.615

(1.2)

CUDA:-Enable(true)

false

(1.3)

CUDA:-IsEnabled()

true

(1.4)

tCUDA := time[real](M1.M2)

.397

(1.5)

evalf(tNoCUDA/tCUDA)

4.068010076

(1.6)

CUDA:-Enable(false)

true

(1.7)

CUDA:-IsEnabled()

false

(1.8)

NULL

Download cuda.mw

Hello all :-)

I just upgraded to 2021 and ran the example help page for CUDA.

From the help we can see that the ratio is 11.

With Maple 2020 I had a ratio of 7.24

With Maple 2021 I have a ratio of around 4. (see the mw attached).

I wonder with which version the help page was made but on my machines the ratio diminishes from version to version

but I upgraded the hardware.

Now it's Windows 10 Pro 20H2, the amazing AMD Ryzen Threadripper (64 cores) and 256 Go RAM, the graphic card is a NVIDIA RTX 3090 with...10496 CUDA cores.

So what can't I get a better ratio with/without CUDA?

Regards.

Hello all,

GI diff(x-1=0,x)

GO  1=0

 

GI diff(x=1,x)

GO 1=0

I wouldlike to have the advice of an *expert* about this (Carl ? Great reputation)

I am *not* an expert! My reputation is very low (I don't post often)

But I know very well Maple! But this Garbage In Garbage Out is puzzling me.

Thank you in advance to those xho will reply clearly on this absurdity.

I

1 2 3 4 Page 1 of 4