- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello I'd like to report a possible bug in Intel Fortran compiler, I was using: Intel(R) Visual Fortran Compiler XE for applications running on IA-32, Version 14.0.2.176 Build 20140130 but the same problem exhibits on Win64 and Linux. It seems that when a file is opened in stream formatted mode and read using non-advancing read, it makes up character at position 8192 (and multiples). Example program is attached, the output is bellow. Thanks for your help, Jan c:\honza\math\nag\npen_build>ifort fread_test_1fff.f90 Intel(R) Visual Fortran Compiler XE for applications running on IA-32, Version 14.0.2.176 Build 20140130 Copyright (C) 1985-2014 Intel Corporation. All rights reserved. Microsoft (R) Incremental Linker Version 10.00.40219.01 Copyright (C) Microsoft Corporation. All rights reserved. -out:fread_test_1fff.exe -subsystem:console fread_test_1fff.obj c:\honza\math\nag\npen_build>fread_test_1fff.exe Reading ifort1fff_test3.txt Section 0 ok, read 99 Section 1 ok, read 99 Section 2 ok, read 99 Section 3 ok, read 99 Section 4 ok, read 99 Section 5 ok, read 99 Section 6 ok, read 99 Section 7 ok, read 99 Section 8 ok, read 99 Section 9 ok, read 99 Section 10 ok, read 99 Section 11 ok, read 99 Section 12 ok, read 99 Section 13 ok, read 99 Section 14 ok, read 99 Section 15 ok, read 99 Section 16 ok, read 99 Section 17 ok, read 99 Section 18 ok, read 99 Section 19 ok, read 99 Section 20 ok, read 99 Section 21 ok, read 99 Section 22 ok, read 99 Section 23 ok, read 99 Section 24 ok, read 99 Section 25 ok, read 99 Section 26 ok, read 99 Section 27 ok, read 99 Section 28 ok, read 99 Section 29 ok, read 99 Section 30 ok, read 99 Section 31 ok, read 99 Section 32 ok, read 99 Section 33 ok, read 99 Section 34 ok, read 99 Section 35 ok, read 99 Section 36 ok, read 99 Section 37 ok, read 99 Section 38 ok, read 99 Section 39 ok, read 99 Section 40 ok, read 99 Section 41 ok, read 99 Section 42 ok, read 99 Section 43 ok, read 99 Section 44 ok, read 99 Section 45 ok, read 99 Section 46 ok, read 99 Section 47 ok, read 99 Section 48 ok, read 99 Section 49 ok, read 99 Section 50 ok, read 99 Section 51 ok, read 99 Section 52 ok, read 99 Section 53 ok, read 99 Section 54 ok, read 99 Section 55 ok, read 99 Section 56 ok, read 99 Section 57 ok, read 99 Section 58 ok, read 99 Section 59 ok, read 99 Section 60 ok, read 99 Section 61 ok, read 99 Section 62 ok, read 99 Section 63 ok, read 99 Section 64 ok, read 99 Section 65 ok, read 99 Section 66 ok, read 99 Section 67 ok, read 99 Section 68 ok, read 99 Section 69 ok, read 99 Section 70 ok, read 99 Section 71 ok, read 99 Section 72 ok, read 99 Section 73 ok, read 99 Section 74 ok, read 99 Section 75 ok, read 99 Section 76 ok, read 99 Section 77 ok, read 99 Section 78 ok, read 99 Section 79 ok, read 99 Section 80 ok, read 99 error at reading section starting at 8100 wrong character at 93 with iachar= 94 read : >aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaaa^aaaaaaa< Section 82 ok, read 99
Link Copied
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
I'm sorry, preview looked OK but when I submitted the text, it got mangled.
Once more:
I'd like to report a possible bug in Intel Fortran compiler, I was using:
Intel(R) Visual Fortran Compiler XE for applications running on IA-32, Version 14.0.2.176 Build 20140130
but the same problem exhibits on Win64 and Linux. It seems that when a file is opened in stream formatted mode and read using non-advancing read, it makes up character at position 8192 (and multiples). Example program is attached, the output is bellow.
Thanks for your help,
Jan
c:\honza\math\nag\npen_build>ifort ../npen/base/tests/fread_test_1fff.f90
Intel(R) Visual Fortran Compiler XE for applications running on IA-32, Version 1
4.0.2.176 Build 20140130
Copyright (C) 1985-2014 Intel Corporation. All rights reserved.
Microsoft (R) Incremental Linker Version 10.00.40219.01
Copyright (C) Microsoft Corporation. All rights reserved.
-out:fread_test_1fff.exe
-subsystem:console
fread_test_1fff.obj
c:\honza\math\nag\npen_build>fread_test_1fff.exe
Reading ifort1fff_test3.txt
Section 0 ok, read 99
Section 1 ok, read 99
Section 2 ok, read 99
Section 3 ok, read 99
Section 4 ok, read 99
Section 5 ok, read 99
Section 6 ok, read 99
Section 7 ok, read 99
Section 8 ok, read 99
Section 9 ok, read 99
Section 10 ok, read 99
Section 11 ok, read 99
Section 12 ok, read 99
Section 13 ok, read 99
Section 14 ok, read 99
Section 15 ok, read 99
Section 16 ok, read 99
Section 17 ok, read 99
Section 18 ok, read 99
Section 19 ok, read 99
Section 20 ok, read 99
Section 21 ok, read 99
Section 22 ok, read 99
Section 23 ok, read 99
Section 24 ok, read 99
Section 25 ok, read 99
Section 26 ok, read 99
Section 27 ok, read 99
Section 28 ok, read 99
Section 29 ok, read 99
Section 30 ok, read 99
Section 31 ok, read 99
Section 32 ok, read 99
Section 33 ok, read 99
Section 34 ok, read 99
Section 35 ok, read 99
Section 36 ok, read 99
Section 37 ok, read 99
Section 38 ok, read 99
Section 39 ok, read 99
Section 40 ok, read 99
Section 41 ok, read 99
Section 42 ok, read 99
Section 43 ok, read 99
Section 44 ok, read 99
Section 45 ok, read 99
Section 46 ok, read 99
Section 47 ok, read 99
Section 48 ok, read 99
Section 49 ok, read 99
Section 50 ok, read 99
Section 51 ok, read 99
Section 52 ok, read 99
Section 53 ok, read 99
Section 54 ok, read 99
Section 55 ok, read 99
Section 56 ok, read 99
Section 57 ok, read 99
Section 58 ok, read 99
Section 59 ok, read 99
Section 60 ok, read 99
Section 61 ok, read 99
Section 62 ok, read 99
Section 63 ok, read 99
Section 64 ok, read 99
Section 65 ok, read 99
Section 66 ok, read 99
Section 67 ok, read 99
Section 68 ok, read 99
Section 69 ok, read 99
Section 70 ok, read 99
Section 71 ok, read 99
Section 72 ok, read 99
Section 73 ok, read 99
Section 74 ok, read 99
Section 75 ok, read 99
Section 76 ok, read 99
Section 77 ok, read 99
Section 78 ok, read 99
Section 79 ok, read 99
Section 80 ok, read 99
error at reading section starting at 8100
wrong character at 93 with iachar= 94
read : >aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaa^aaaaaaa<
Section 82 ok, read 99
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Thank you for reporting this possible bug with stream formatted I/O. I will investigate your test case and post an update when I know more.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
It appears related to the internal buffer. I need to inquire w/our run-time developer about this further. The test case runs when adding either BUFFERCOUNT=2 or BLOCKSIZE=16384 on the OPEN, or using the env-variable FORT_BLOCKSIZE=16384.
I'll post again when I know more.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello Kevin
thanks for your reply, it seems that setting BLOCKSIZE=16384 just moves the problematic character from position 8192 to 16384 so it indeed points to a problem of the internal buffer. I hope it helps.
All the best,
Jan
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Yeah and BUFFERCOUNT unfortunately is the same too so those might be of limited help in avoiding the issue for now. The RTL developer concurred it appears to be defect and will be looking into the issue further (see internal tracking id below). I will let you know if a more usable work around is found.
(Internal tracking id: DPD200254005)
(Resolution Update on 09/11/2014): This defect is fixed in the Intel® Composer XE 2013 SP1 Update 3 release (2013.1.3.174 - Linux) -AND- the Intel® Parallel Studio XE 2015 Initial Release (2015.0.090 - Linux)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
This defect is fixed in the Intel® Composer XE 2013 SP1 Update 3 release (2013.1.3.174 - Linux) -AND- the Intel® Parallel Studio XE 2015 Initial Release (2015.0.090 - Linux). Both are available from the Intel Registration Center. Thank you for reporting this defect.
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page