Align 128-bit data so that its base address is a multiple of sixteen (8-byte boundaries). I think, maybe I have to pass the length of the array "a" too to C++, but if so, I don't know how to do it either. Click on the "Yes" and change it to "Np". Steve, thanks! This edition retains the conversational style of the original, along with its simple, carefully chosen subset language and its focus on floating-point calculations. Check This Out
Sun, 14 Jul 2002 03:00:00 GMT Page 1 of 1 [ 3 post ] Relevant Pages 1. Compiling with options -i2,-r8, or -dbl changes the defaults for certain data declarations that appear without an explicit size: Table 2-2 Data Defaults Changed by -i2, -r8, -dbl Default Type With share|improve this answer edited May 7 '12 at 22:42 answered May 7 '12 at 22:32 M. Top Steve Lionel (Intel) Fri, 05/22/2009 - 09:59 I'm unsure why Tim suggested /Qipo- - that doesn't seem relevant to me, but perhaps I overlooked something.
Digital Diversity How to add part in eagle board that doesn't have corresponded in the schematic "jumpers"? If you specify -align norecords (Linux) or /align:norecords (Windows) or specify -vms (Linux) or /Qvms (Windows) without RECORDS no padding bytes are added between array elements. Jan Sun, 14 Jul 2002 03:00:00 GMT p. Here is one of the issues I have run into so far(hundreds of these): Warning 1 warning #6375: Because of COMMON, the alignment of object is inconsistent with its type [SM_MAP]
Please try the request again. The examples don't indicate whether that would be a problem. For more information, see the Intel® Fortran Language Reference. Scroll down to "Warn for unaligned data.
It is not supported for ALLOCATABLE/POINTER variables. Fortran Common Block In the last case, if you declared SP_ID1 as a CHARACTER string, or as INTEGER*2, that might account for the problem.ifort 11, with the IPO options, wants to pad COMMON so Next:Prefer Automatic Uninitialized Variables, Up:Faster Programs 14.6.1 Aligned Data On some systems, such as those with Pentium Pro CPUs, programs that make heavy use of REAL(KIND=2) (DOUBLE PRECISION) might run much The following statements can cause unaligned data: Statement Options Description Common blocks (COMMON statement) commons or dcommons The order of variables in the COMMON statement determines their storage order.
And over the years I've slowly trained myself to type everything in lower case - long ago ALL FORTRAN WAS UPPER CASE for some reason that escapes me. Continuing with the ISO_C_Binding, if you use the Fortran types that it provides you will be ensured of a match to the C types. You can use the align command-option to ensure naturally aligned data, but you should check and consider reordering data declarations of data items within common blocks, derived-type structures, and record structures REAL*16 and COMPLEX*32 are SPARC only.
Then, in your last case, even if SP_ID1 has a 32-bit KIND, there would be padding added if it had an odd number of elements. An array aligns the same as the array element. Gfortran Align If you omit the SEQUENCE statement, the Intel Fortran adds the padding bytes needed to naturally align data item components, unless you specify the -align norecords (Linux) or /align:norecords (Windows) option. But then, I would like all my real numbers treated as >double precision, so I type >f77 -r8 testit.f >and I get a bunch of error messages like >Error processing common
The message includes the address of the unaligned access. http://jamisonsoftware.com/fortran-error/fortran-error-6404.php The Fortran options have no effect on unaligned data, so data declarations must be carefully specified to naturally align data. Not the answer you're looking for? PLEASE HELP re: making Windows App's using Fortran subroutines 3.
If so, add the switch: -warn noalign and the warning should go away. This isn't specific to gfortran, just some good documentation. Length Blank COMMON blocks need not be the same length in different program units. this contact form When declaring data, consider using explicit length declarations, such as specifying a KIND parameter.
In all other ways, -dbl and -r8 produce the same results. The trailing padding byte is needed because CATALOG_SPRING is an array; it is inserted by the compiler when the -align records (Linux) or /align:records (Windows) option is in effect. EQUIVALENCE statements EQUIVALENCE statements can force unaligned data or cause data to span natural boundaries.
With -dbl or -r8, INTEGER and LOGICAL are allocated the larger space indicated above. Using the ISO_C_Binding will make your code compiler and platform independent. Now, for the single precision case, both the integers (nt, nrk, etc.) and the reals (t, dt, etc.) are the same size, and their order doesn't matter. I don't find it helpful at all.
Use the following rules to prevent unaligned data: Always define the largest size numeric data items first. In the main program, the number of coordinates and free parameters were defined using the PARAMETER statement as NCOORD and NPARAM respectively. Memory is shared in the COMMON block in the following way: Main Program Common Memory Storage Subroutine R 99.9 A A -14 I F 0.2 B Note that the variable names http://jamisonsoftware.com/fortran-error/fortran-error-5082.php Following your advices I finally realized what my problem was.
Intel Fortran record structures use the RECORD statement and optionally the STRUCTURE statement, which are extensions to the Fortran 77 and Fortran standards. Can Communism become a stable economic strategy? It had a couple of sample programs that I copied and adapted. I did have some ambition to learn how to use Xcode to generate windows etc.
Scroll down to "Warn for unaligned data. Here is a link to a post about mixing modern Fortran and C++: http://solarianprogrammer.com/2012/05/11/mixed-language-programming-cpp-11-fortran-2008/ share|improve this answer answered May 11 '12 at 16:43 mmisu 1928 add a comment| Your Answer but I don't have a sample Xcode program THAT CALLS A FORTRAN PROGRAM to adapt to my needs, and I'm not up to really learning Xcode use. How to handle a senior developer diva who seems unaware that his skills are obsolete?