Running "camb params.ini" immediately after correctly compiling with gfortran gives error

[Dhell96]

Running "camb params.ini" after correctly compiling with gfortran i get the error: " Error result inithermo: failed to find end of recombination Note: The following floating-point exceptions are signalling: IEEE_INVALID_FLAG IEEE_DIVIDE_BY_ZERO IEEE_UNDERFLOW_FLAG IEEE_DENORMAL"

[dgrin1]

Hello there - I have had similar errors, both with axionCAMB and the version of CAMB it is based on. I have found that I can get around this problem by either a) switching to g95 or ifort or b) removing some of the optimization flags in the fortran compile command for camb in Makefile_main

If you send along your makefile and any other details I can try to reproduce the error, or help you out over a zoom call.

[Dhell96]

Hi, thanks for your fast reply! I will send the makefiles, because it's the only thing i changed after downloading the code. And i forgot to mention that i'm on windows, if this could help. However i will try both the options you suggested!

Here it is the makefile and makefile_main. Thanks in advance!

Makefile_main.txt Makefile.txt .

[dgrin1]

I would try toggling the flags below on and off...., or switching to g95. Windows should not be a problem. I've definitely run up against this issue before, and it behaves differently on different compilers/OSs, and always get it working through some of the permutations described below and above and in my prior message. Let me know if you need mor ehelp

F90C = gfortran# -ffast-math FFLAGS = -O3

-ffast-math

[Dhell96]

Hi, thanks again! Itried ifort but that's the error, i can't even compilate:

make ifort -O3 -c constants.f90 process_begin: CreateProcess(NULL, ifort -O3 -c constants.f90, ...) failed. make (e=2): Cannot find the specified file. make: *** [Makefile_main:85: constants.o] Error 2

Then i tried to use gfortran with all the permutations you suggested (in the makefile, right?) but the error still persists.

And g95 site is now under maintenance.

Thanks in advance!

[dgrin1]

Always run make clean repetitively . That just looks like a dangling file from a prior iteration

Keep me posted

Sent from my iPhone

On Jan 8, 2022, at 12:44 PM, Dhell96 @.***> wrote:

 Hi, thanks again! Itried ifort but that's the error, i can't even compilate:

make ifort -O3 -c constants.f90 process_begin: CreateProcess(NULL, ifort -O3 -c constants.f90, ...) failed. make (e=2): Cannot find the specified file. make: *** [Makefile_main:85: constants.o] Error 2

Then i tried to use gfortran with all the permutations you suggested (in the makefile, right?) but the error still persists.

And g95 site is now under maintenance.

Thanks in advance!

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[Dhell96]

Everytime i use make i use a completely new clean folder with clean code just to not have this kind of problem. I don't really know what is going on because it's my first time using make and compiling in fortran. Switching to linux could help me in some way?

[Dhell96]

Hi, i managed to compile it using the linux bash and installing ifort there. So, if i run params.ini, now everything works well, I suppose. Last question: how can i generate graphs, for example the Halo Mass Function or the matter power spectrum, now?