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  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Wed Jan 16, 2019 5:44 am   Subject:
Paul, I'd love to prepare the simplest possible variant for you to look as I also have another problems with the code. Hope I will do that quick.

Mecej4 - yes, good idea, forgot about this issue wh ...
  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Tue Jan 15, 2019 1:36 pm   Subject:
Got 8_40. Found no difference in my code diagnostics.

Trying other options, found that the /CHECK compiler option still does not work in /64. During run compiler finds the out of bound error but p ...
  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Tue Jan 15, 2019 9:49 am   Subject:
I am also surprised how and why underflow causes havoc in the code. This is very old problem. In /32 the call mask_underflow@() solved this problem. Here with /64 the PERMIT_UNDERFLOW@(.TRUE.) does no ...
  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Mon Jan 14, 2019 11:58 pm   Subject:
No doubts that this extract works ok, I will not even check it myself. The trick is that something else in the code causing change of the state of FPU or some kind of corruption (debugger incorrectly ...
  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Mon Jan 14, 2019 3:07 pm   Subject:
I have no tools to reveal such content. Looks like even PERMIT_UNDERFLOW@(0_2) does not catch everything.

By experience, the problems before happened when i ran the code with a lot of EXP(-A) when ...
  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Sun Jan 13, 2019 10:28 am   Subject:
Oh my...This revealed amount of roaches i can not believe! I will probably die before cleaning all of them. Thanks, Paul

Somebody probably can get great job using FTN95 by giving ad like this:

...
  Topic: MASK_UNDERFLOW@
DanRRight

Replies: 12
Views: 227

PostForum: 64-bit   Posted: Sat Jan 12, 2019 9:14 am   Subject: MASK_UNDERFLOW@
Was it implemented in 64bits? Somewhere in my code happening underflow and there is no easy way to find this place, large code, lot of data, long execution time, hard to find when and how code starts ...
  Topic: Fortran 2003 and 2008 features
DanRRight

Replies: 18
Views: 2272

PostForum: Suggestions   Posted: Thu Dec 13, 2018 9:24 am   Subject:
Thanks
  Topic: Output Window functionality + clearwin64.dll
DanRRight

Replies: 8
Views: 409

PostForum: ClearWin+   Posted: Fri Nov 23, 2018 8:29 pm   Subject:
is it really possible mixing 32-bit ftn95 and ifort .obj files?There exist universal way which works with all compilers and needs almost zero effort, just changing few letters in BAT file which is doi ...
  Topic: Difference between release and checkmate?
DanRRight

Replies: 32
Views: 1633

PostForum: General   Posted: Thu Nov 22, 2018 8:27 pm   Subject:
But how the code mentioned above claimed to work as real*10 which uses

integer,parameter::k = SELECTED_REAL_KIND(18,4931) ?
  Topic: Difference between release and checkmate?
DanRRight

Replies: 32
Views: 1633

PostForum: General   Posted: Wed Nov 21, 2018 10:36 pm   Subject:
Was precision larger than real*8 implemented in /64 ? The real*10 was missing
  Topic: AVX512 makes killing speed?
DanRRight

Replies: 6
Views: 516

PostForum: General   Posted: Sun Nov 11, 2018 11:29 pm   Subject:
Thanks for the info about 2019 Intel lib

BTW, the RO's two pages of assembler text is not the elegant one line call but two pages of totally incomprehensible nonsense for all 100% fortraners minus ...
  Topic: AVX512 makes killing speed?
DanRRight

Replies: 6
Views: 516

PostForum: General   Posted: Sun Nov 11, 2018 3:53 pm   Subject:
Is this what FTN95 doing in one single line of Fortran text?

call upcase@ (text) Smile

Silverfrost may look at these 2 pages of assembler code posted there to speed it up.

Is it worth ...
  Topic: AVX512 makes killing speed?
DanRRight

Replies: 6
Views: 516

PostForum: General   Posted: Sun Nov 11, 2018 10:35 am   Subject: AVX512 makes killing speed?
There was new 9th gen Intel processor i9-9900k tested on Anandtech recently reaching 5GHz. One of scientifically oriented tests on 3D particle movement I found produces very unusual result. There the ...
  Topic: Visualisation library
DanRRight

Replies: 18
Views: 1419

PostForum: General   Posted: Thu Oct 11, 2018 5:53 pm   Subject:
You will never find what you want sometimes for any money you can bar. Use FTN95 with OpenGL and write such programs yourself. This is easy. I can send you demo written 20 years ago still with FTN77.
 
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