record length issue

[mwb203]

Hi everyone

im wondering whether anyone can help with a problem i have compiling a program. I am compiling with a 64bit compiler and i get this error

forrtl: severe (104): incorrect RECL= specifier value for connected file, unit 87, file /tmp/pbs.1205015.foo/fortwaNU1m

the line it refers to is:
OPEN (UNIT=NFILCBWF,STATUS='SCRATCH',FORM='UNFORMATTED',
& ACCESS='DIRECT',RECL=(4+2*(2+4*NRMAX))*2*8)

any ideas would be great!

cheers

 

[mikrom]

Maybe on the right side of RECL could not be an expression.

Try first
myreclen = 4+2*(2+4*NRMAX))*2*8

and then in OPEN code
RECL=myreclen

 

[xwb]

Might also be worth checking what NRMAX is.

 

[mwb203]

Hi

thanks for the suggestion, no luck with that idea tho im afraid!
NRMAX is set at 750, so not a unreasonable number

 

[mikrom]

Wit NRMAX = 750 you get
myreclen = (4+2*(2+4*NRMAX))*2*8 = 96128

It's possible that you exceeded the maximal record length - see the manual for your compiler.

E.g. here are some limits for a VMS Fortran compiler

http://h21007.www2.hp.com/portal/download/files/unprot/Fortran/docs/lrm/lrm0500.htm

 

[xwb]

Is NRMAX the number of records?

 

[mwb203]

hi, thank you all for your suggestions, NRMAX is fixed variable specified as 750. I have tried limiting RECL from small to large numbers, but still no luck.
any other thoughts would be greatly apprecited!

 

[gullipe]

Hi all

I tested this on my F77 compiler and the max value for NRMAX was 510, which gives RECL=65408 or slightly less than 2**16=65536. NRMAX=511 failed (RECL=65536). Maybe RECL is limited to 65535.

 

[xwb]

A 64K record is pretty big. Might be worth considering an alternative strategy.