Dear Gilles, dear All,
as far I remember no. The compiler is the same as the options which I use.
Maybe, the error is some other places of my code. However, the results look
errors in allocation of sent and received vector of datatype.
The import is that at least mydata type definitions in corre
Dear all,
I would like to share with what I have done in oder to create my own MPI
data type. The strange thing is that it worked until some day ago and then
it stopped working. This because probably I have changed my data type and I
miss some knowledge about MPI data type
This is my data type:
*
, SLURM...) which can launch many
> parallel mpi applications at the same time depending on the results of
> previous runs.
> Look at :
> - Dakota https://dakota.sandia.gov/ (open source)
> - Modefrontier https://www.esteco.com/modefrontier (commercial)
>
> Patrick
>
> Dieg
OUBLE_PRECISION, then your count is
> actually 1.
>
>
> On Aug 22, 2018, at 8:02 AM, Gilles Gouaillardet <
> gilles.gouaillar...@gmail.com> wrote:
>
>
> Diego,
>
>
> Try calling allreduce with count=1
>
>
> Cheers,
>
>
> Gilles
>
>
&g
rite your first MPI program
> then use mpirun from the command line.
>
> If you have a cluster which has the PBS batch system you can then use PBS
> to run your MPI program.
> IF that is not clear please let us know what help you need.
>
>
>
>
>
>
>
>
>
>
&g
Dear all,
I have a philosophical question.
I am reading a lot of papers where people use Portable Batch System or job
scheduler in order to parallelize their code.
What are the advantages in using MPI instead?
I am writing a report on my code, where of course I use openMPI. So tell me
please ho
Dear all,
I am going to start again the discussion about MPI_MAXLOC. We had one a
couple of week before with George, Ray, Nathan, Jeff S, Jeff S., Gus.
This because I have a problem. I have two groups and two communicators.
The first one takes care of compute the maximum vale and to which process
to add an extra broadcast in local_comm
>
>
> Cheers,
>
>
> Gilles
>
>
>
> On 8/20/2018 3:56 PM, Diego Avesani wrote:
>
>> Dear George, Dear Gilles, Dear Jeff, Deal all,
>>
>> Thank for all the suggestions.
>> The problem is that I do not want to FI
,
MPI_MASTER_COMM,iErr)
!
IF(counter.GT.1)THEN
EXIT
ENDIF
ENDDO
My original code stucks on the cycle and I do not know why.
Thanks
Diego
On 13 August 2018 at 23:44, George Reeke wrote:
>
> > On Aug 12, 2018, at 2:18 PM, Diego Avesani
> >
dear Jeff, dear all,
its my fault.
Can I send an attachment?
thanks
Diego
On 13 August 2018 at 19:06, Jeff Squyres (jsquyres)
wrote:
> On Aug 12, 2018, at 2:18 PM, Diego Avesani
> wrote:
> >
> > Dear all, Dear Jeff,
> > I have three communicator:
know, Nathan hasn't advanced a proposal to kill them in
>>> MPI-4, meaning that they'll likely continue to be in MPI for at
>>> least another 10 years. :-)
>>>
>>> (And even if they did get killed in MPI-4, implementations like Open
>>
8, at 6:27 PM, Diego Avesani
> wrote:
> >
> > The question is:
> > Is it possible to have a barrier for all CPUs despite they belong to
> different group?
> > If the answer is yes I will go in more details.
>
> By "CPUs", I assume you mean "MPI p
a hard to tell what is happening in the code snippet below
> because there's a lot of variables used that are not defined in your
> snippet -- so we have no way of knowing what is going on just from these
> few lines of code.
>
>
>
> > On Aug 10, 2018, at 11:52 AM, Diego A
them in MPI-4 I
> would.
>
> On Aug 10, 2018, at 9:47 AM, Diego Avesani
> wrote:
>
> Dear all,
> I have just implemented MAXLOC, why should they go away?
> it seems working pretty well.
>
> thanks
>
> Diego
>
>
> On 10 August 2018 at 17:39, Nathan Hjelm via
Dear all,
I did it, but I am still afraid about Nathan concern.
What do you think?
thanks again
Diego
On 10 August 2018 at 17:41, Reuti wrote:
>
> > Am 10.08.2018 um 17:24 schrieb Diego Avesani :
> >
> > Dear all,
> > I have probably understood.
> > The tri
Dear all,
I have a MPI program with three groups with some CPUs in common.
I have some problem with MPI_barrier.
I try to make my self clear. I have three communicator:
INTEGER :: MPI_GROUP_WORLD
INTEGER :: MPI_LOCAL_COMM
INTEGER :: MPI_MASTER_COMM
when I apply:
IF(MPIworld%rank.EQ.0) W
use it on the MPI Forum [2].
>
> George.
>
>
> [1] https://www.open-mpi.org/doc/v2.0/man3/MPI_Reduce.3.php
> [2] https://www.mpi-forum.org/docs/mpi-1.1/mpi-11-html/node79.html
>
> On Fri, Aug 10, 2018 at 11:25 AM Diego Avesani
> wrote:
>
>> Dear all,
>> I
Dear all,
I have probably understood.
The trick is to use a real vector and to memorize also the rank.
Have I understood correctly?
thanks
Diego
On 10 August 2018 at 17:19, Diego Avesani wrote:
> Deal all,
> I do not understand how MPI_MINLOC works. it seem locate the maximum in a
&g
e I get back to the group
> and ask whoever owns it to kindly reply back with its rank.
> Ray
>
>
> On 8/10/2018 10:49 AM, Reuti wrote:
>
>> Hi,
>>
>> Am 10.08.2018 um 16:39 schrieb Diego Avesani :
>>>
>>> Dear all,
>>>
>>
Dear all,
I have a problem:
In my parallel program each CPU compute a value, let's say eff.
First of all, I would like to know the maximum value. This for me is quite
simple,
I apply the following:
CALL MPI_ALLREDUCE(eff, effmaxWorld, 1, MPI_DOUBLE_PRECISION, MPI_MAX,
MPI_MASTER_COMM, MPIworld%i
Deal all,
probably I have found the error.
Let's me check. Probably I have not properly set-up colors.
Thanks a lot,
I hope that you have not lost too much time for me,
I will let you know If that was the problem.
Thanks again
Diego
On 3 August 2018 at 19:57, Diego Avesani wrote:
>
, MPIlocal%nCPU,MPIlocal%iErr)
openMPI seems not able to create properly MPIlocal%rank.
what should be? a bug?
thanks again
Diego
On 3 August 2018 at 19:47, Ralph H Castain wrote:
> Those two command lines look exactly the same to me - what am I missing?
>
>
> On Aug 3, 2018, at 10:
Dear all,
I am experiencing a strange error.
In my code I use three group communications:
MPI_COMM_WORLD
MPI_MASTERS_COMM
LOCAL_COMM
which have in common some CPUs.
when I run my code as
mpirun -np 4 --oversubscribe ./MPIHyperStrem
I have no problem, while when I run it as
mpirun -np 4 --ov
> On Friday, July 27, 2018, Diego Avesani wrote:
>
>> Dear all,
>>
>> I am developing a code for hydrological applications. It is written in
>> FORTRAN and I am using ifort combine with openMPI.
>>
>> In this moment, I am debugging my code due to the fact
Dear all,
I am developing a code for hydrological applications. It is written in
FORTRAN and I am using ifort combine with openMPI.
In this moment, I am debugging my code due to the fact that I have some NaN
errors. As a consequence, I have introduce in my Makefile some flags for
the ifort compil
good.
>
> On Aug 2, 2017, at 7:17 AM, Diego Avesani wrote:
>
> Dear all, Dear Jeff,
>
> I am very sorry, but I do not know how to do this kind of comparison.
>
> this is my peace of code:
>
> CALL MPI_GROUP_INCL(GROUP_WORLD, nPSObranch, MRANKS, MASTER_GROUP,ierr)
> CAL
,
MASTER_COMM, iErr)
ENDIF
What I should compare?
Thanks again
Diego
On 1 August 2017 at 16:18, Jeff Squyres (jsquyres)
wrote:
> On Aug 1, 2017, at 5:56 AM, Diego Avesani wrote:
> >
> > If I do this:
> >
> > CALL MPI_SCATTER(PP, npart, MPI_DOUBLE, PPL, 10,MPI_DOU
, MPI_DOUBLE, PPL, 10,MPI_DOUBLE, 0,
*MASTER_COMM*, iErr)
ENDIF
Is there any smarter way do to this?
Thanks again
Diego
On 28 July 2017 at 20:07, Diego Avesani wrote:
> Dear George, Dear all,
>
> I have just rewritten the code to make it more clear:
>
> * INTEGER :: col
roups despite I set "*colorglobal = MPI_COMM_NULL*"
What do think? Is there something that I haven't understood properly?
Thanks again, I am trying to learn better MPI_Comm_create_group.
Thanks
Diego
On 28 July 2017 at 16:59, Diego Avesani wrote:
> Dear George, Dear
different from MPI_SPLIT_COMM.
Again, really, really thanks
Diego
On 28 July 2017 at 16:02, George Bosilca wrote:
> I guess the second comm_rank call is invalid on all non-leader processes,
> as their LEADER_COMM communicator is MPI_COMM_NULL.
>
> george
>
> On Fri, Jul 28,
e first MPI_COMM_SPLIT by the same approach.
> I would be curious to see the outcome.
>
> George.
>
>
> On Thu, Jul 27, 2017 at 9:44 AM, Diego Avesani
> wrote:
>
>> Dear George, Dear all,
>>
>> I have tried to create a simple example. In particular, I wou
design. Now, this example does
not work, but probably there is some coding error.
Really, Really thanks
Diego
Diego
On 27 July 2017 at 10:42, Diego Avesani wrote:
> Dear George, Dear all,
>
> A question regarding program design:
> The draft that I have sent to you has to be
_am_leader(small_comm) ? 1 : MPI_UNDEFINED,
> rank_in_comm_world,
> &leader_Comm);
>
> The leader_comm will be a valid communicator on all leaders processes, and
> MPI_COMM_NULL on all others.
>
> George.
>
>
>
> On Wed, Jul 26, 2
erflow on this at https://stackoverflow.com/
> questions/24806782/mpi-merge-multiple-intercoms-into-a-single-intracomm
>
> How is your MPI environment started (single mpirun or mpi_comm_spawn) ?
>
> George.
>
>
>
> On Tue, Jul 25, 2017 at 10:44 AM, Diego Avesani
>
Dear All,
I am studying Groups and Communicators, but before start going in detail, I
have a question about groups.
I would like to know if is it possible to create a group of masters of the
other groups and then a intra-communication in the new group. I have spent
sometime reading different tuto
Dear all,
I have done a program with gfortran\fortran and openMPI.
I would like to profile it.
Can someone suggest me a open program to profile it?
I have done some Internet researches but I have no enough information to
choose the best one.
Thanks in advance to all of you.
Diego
_
Dear all,
I have the following question. Is it possible to cast an MPI inside another
MPI?
I would like to have to level of parallelization, but I would like to avoid
the MPI-openMP paradigm.
Another question. I normally use openMPI but I would like to read something
to understand and learn all i
lts? Are both
> results correct? Do you have ways of assessing correctness of your results?
>
> On February 16, 2016 at 5:19:16 AM, Diego Avesani (diego.aves...@gmail.com)
>> wrote:
>>
>>> Dear all,
>>> I have written an fortran-MPI code.
>>> Usually,
Dear all,
I have written an fortran-MPI code.
Usually, I compile it in MPI or in openMPI according to the cluster where
it runs.
Unfortunately, I get complitly a different result and I do not know why.
Where could I look? Do you know why?
Thanks
Diego
Dear all, Dear Jeff S., DearJeff H.,
I had to set nMSG equal to 2. Now, the program works.
Thansks, for you time and helps.
Diego
On 30 January 2016 at 00:11, Jeff Hammond wrote:
>
>
> On Fri, Jan 29, 2016 at 2:45 AM, Diego Avesani
> wrote:
>
>> Dear all,
>>
far as I am concerned, this is extremely unlikely.
>
> Cheers,
>
> Gilles
>
> On Friday, January 29, 2016, Diego Avesani
> wrote:
>
>> Dear all, Dear Jeff, Dear Gilles,
>>
>> I am sorry, porblably I am a stubborn.
>>
>> In all my code I have
>
th a first argument
> of 3:
>
> --
> MPI_Waitall(271): MPI_Waitall(count=3, req_array=0x7445f0,
> status_array=0x744600) failed
> --
>
> We can't really help you with problems with Intel MPI; sorry. You'll need
> to contact their tech support for assistance.
>
>
&g
Diego,
>
> your code snippet does MPI_Waitall(2,...)
> but the error is about MPI_Waitall(3,...)
>
> Cheers,
>
> Gilles
>
>
> On Friday, January 29, 2016, Diego Avesani
> wrote:
>
>> Dear all,
>>
>> I have created a program in fortran and Open
Dear all,
I have created a program in fortran and OpenMPI, I test it on my laptop and
it works.
I would like to use it on a cluster that has, unfortunately, intel MPI.
The program crushes on the cluster and I get the following error:
*Fatal error in MPI_Waitall: Invalid MPI_Request, error stack:
oximately the same number of iterations.
>
> Damien
>
>
> On 2015-10-28 3:51 PM, Diego Avesani wrote:
>
> dear Andreas, dear all,
> The code is quite long. It is a conjugate gradient algorithm to solve a
> complex system.
>
> I have noticed that when a do cycle is sma
nt and the difference increase with the number of
iterations.
What do you think?
Diego
On 28 October 2015 at 22:32, Andreas Schäfer wrote:
> On 22:03 Wed 28 Oct , Diego Avesani wrote:
> > When I use a single CPU a get a results, when I use 4 CPU I get another
> > one. I do not
Dear all,
I have problem with my code.
When I use a single CPU a get a results, when I use 4 CPU I get another
one. I do not think that very is a bug.
Do you think that these small differences are normal?
Is there any way to get the same results? is some align problem?
Really really thanks
Di
u just pass an
> pointer to this field to MPI and declare that it contains size(A)=12
> entries. All displacements are relative to the first entry of that field,
> so a displacement of 0 points to A(-1), a displacement of 1 to A(0) and so
> on.
>
> Best
>
> Georg
>
>
ements by one.
>
> Best
>
> Georg
>
>
> Am 14.10.2015 um 15:51 schrieb Diego Avesani:
>
> dear all,
> I have some problem with MPI_GATHERV.
>
> In my code I generate a complex number
>
> DO ij=iNS,iNE
> X11(ij) = cmplx(1.,0.)
> ENDDO
>
&
dear all,
I have some problem with MPI_GATHERV.
In my code I generate a complex number
DO ij=iNS,iNE
X11(ij) = cmplx(1.,0.)
ENDDO
where iNS,INE change according to the CPU rank, in may case
cpu 0 1 10050
cpu 1 10051 20100
cpu 2 20101 301
Dear Jeff, Dear Gilles, Dear All,
now is all more clear.
I use CALL MPI_ISEND and CALL MPI_IRECV. Each CPU send once and revive
once, this implies that I have REQUEST(2) for WAITALL. However, sometimes
dome CPU does not send or receive anything, so I have to set REQUEST
= MPI_REQUEST_NULL in order
quests, isend with the
> first element and irecv with the second element, and then waitall the array
> of size 2
> note this is not equivalent to doing two MPI_Wait in a row, since that
> would be prone to deadlock
>
> Cheers,
>
> Gilles
>
> On Wednesday, September 30, 2
; I don't think that this pattern was obvious from the code snippet you
> sent, which is why I asked for a small, self-contained reproducer. :-)
>
> I don't know offhand how send_request(:) will be passed to C.
>
>
> > On Sep 30, 2015, at 10:16 AM, Diego Avesani
> w
dear all,
I am not sure if I have understood correctly mpi_gather and mpi_gatherv.
This is my problem:
I have a complex vector, let's say: X1, where X1 is (1:625).
Each CPU work only with some element of X1, let say:
CPU 0 --> X1(iEnd-iStart) 150 elements
CPU 1 --> X1(iEnd-iStart) 150 element
gt; entries with real requests.
>
> It seems much simpler / faster to just pass in M to MPI_WAITANY (any
> friends), not N.
>
>
> > On Sep 30, 2015, at 3:43 AM, Diego Avesani
> wrote:
> >
> > Dear Gilles, Dear All,
> >
> > What do you mean that the
>
> Cheers,
>
> Gilles
>
>
> On Tuesday, September 29, 2015, Diego Avesani
> wrote:
>
>> dear Jeff, dear all,
>> I have notice that if I initialize the variables, I do not have the error
>> anymore:
>> !
>> ALLOCATE(SEND_REQUEST(nMsg),RECV_R
> !
> > !
> > CALL MPI_WAITALL(nMsg,send_request,send_status_list,MPIdata%iErr)
> > CALL MPI_WAITALL(nMsg,recv_request,recv_status_list,MPIdata%iErr)
> >
> > Diego
> >
> >
> > On 29 September 2015 at 00:15, Jeff Squyres (jsquyr
dear Jeff, dear all,
I have notice that if I initialize the variables, I do not have the error
anymore:
!
ALLOCATE(SEND_REQUEST(nMsg),RECV_REQUEST(nMsg))
SEND_REQUEST=0
RECV_REQUEST=0
!
Could you please explain me why?
Thanks
Diego
On 29 September 2015 at 16:08, Diego Avesani
wrote
,recv_status_list,MPIdata%iErr)
Diego
On 29 September 2015 at 00:15, Jeff Squyres (jsquyres)
wrote:
> Can you send a small reproducer program?
>
> > On Sep 28, 2015, at 4:45 PM, Diego Avesani
> wrote:
> >
> > Dear all,
> >
> > I have to use a send_request
Dear all,
I have to use a send_request in a MPI_WAITALL.
Here the strange things:
If I use at the begging of the SUBROUTINE:
INTEGER :: send_request(3), recv_request(3)
I have no problem, but if I use
USE COMONVARS,ONLY : nMsg
with nMsg=3
and after that I declare
INTEGER :: send_request(nMsg
res (jsquyres)
> wrote:
> > On Sep 3, 2015, at 10:43 AM, Diego Avesani
> wrote:
> >>
> >> Dear Jeff, Dear all,
> >> I normaly use "USE MPI"
> >>
> >> This is the answar fro intel HPC forum:
> >>
> >> If you are sw
ent shown us anything about what goes wrong, you just give us
> the error statement and assume it is because of ill-defined type-creation,
> it might as well be because you call allreduce erroneously.
> Please give us more information...
>
> 2015-09-03 14:59 GMT+00:00 Diego Avesani :
&g
it is recommended that you recompile everything.
>
> use mpi
>
> is a module, you cannot mix these between compilers/environments, sadly
> the Fortran specification does not enforce a strict module format which is
> why this is necessary.
>
>
>
> 2015-09-03 14:43 GMT+00:00 Dieg
; instead of "include 'mpif.h'", and see if that
> turns up any errors.
>
>
> > On Sep 2, 2015, at 12:13 PM, Diego Avesani
> wrote:
> >
> > Dear Gilles, Dear all,
> > I have found the error. Some CPU has no element to share. It was a my
> error
.
> I recommend you first do this, so you can catch the error as soon it
> happens, and hopefully understand why it occurs．
>
> Cheers,
>
> Gilles
>
>
> On Wednesday, September 2, 2015, Diego Avesani
> wrote:
>
>> Dear all,
>>
>> I have notice small
Dear all,
I have notice small difference between OPEN-MPI and intel MPI.
For example in MPI_ALLREDUCE in intel MPI is not allowed to use the same
variable in send and receiving Buff.
I have written my code in OPEN-MPI, but unfortunately I have to run in on a
intel-MPI cluster.
Now I have the foll
Dear all,
here how I create a 2D vector type to send 3D array element:
(in the attachment)
The vectors are:
real*4 AA(4,5,3), BB(4,5,3)
In my idea both AA and BB have three elements (last columns) and each
elements has (4x5) features.
1) What do you think?
2) why I can not send AA(1,1,2:3) as
call MPI_SEND(AA(1,1,2:3), 2, rowtype, 1, 300, MPI_COMM_WORLD, ierr)
Thanks a lot
Diego
On 18 January 2015 at 13:02, Diego Avesani wrote:
> Dear All, Dear Gus, Dear George,
> I almost get it. In the attachment the program.
>
> All data arrived, However I got a segmentation
for the other post in the other treat.)
What do you think?
Thanks again
Diego
On 16 January 2015 at 20:04, Diego Avesani wrote:
> Dear all,
> here the 3D example, but unfortunately it does not work.
> I believe that there is some problem with the stride.
>
> What do you th
;
>>>>
>>>> On Jan 15, 2015, at 19:31, Gus Correa wrote:
>>>>>
>>>>> I never used MPI_Type_create_subarray, only MPI_Type_Vector.
>>>>> What I like about MPI_Type_Vector is that you can define a stride,
>>>
Dear all,
here the 3D example, but unfortunately it does not work.
I believe that there is some problem with the stride.
What do you think?
Thanks again to everyone
Diego
On 16 January 2015 at 19:20, Diego Avesani wrote:
> Dear All,
> in the attachment the 2D example, Now I will try
Dear All,
in the attachment the 2D example, Now I will try the 3D example.
What do you think of it? is it correct?
The idea is to build a 2D data_type, to sent 3D data
Diego
On 16 January 2015 at 18:19, Diego Avesani wrote:
> Dear George, Dear All,
>
> and what do you think
t have
> to.
>
> George.
>
> On Jan 16, 2015, at 11:32 , Diego Avesani wrote:
>
> Dear all,
>
> Could I use MPI_PACK?
>
>
> Diego
>
>
> On 16 January 2015 at 16:26, Diego Avesani
> wrote:
>
>> Dear George, Dear all,
>>
>>
Dear all,
Could I use MPI_PACK?
Diego
On 16 January 2015 at 16:26, Diego Avesani wrote:
> Dear George, Dear all,
>
> I have been studying. It's clear for 2D case QQ(:,:).
>
> For example if
> real :: QQ(npt,9) , with 9 the characteristic of each particles.
>
in
> a contiguous buffer originally discontinuous elements. As a result there is
> no need to use the MPI_TYPE_VECTOR, but instead you can just use the type
> you created so far (MPI_my_STRUCT) with a count.
>
> George.
>
>
> On Fri, Jan 16, 2015 at 5:32 AM, Diego Avesan
e_vector using strides here:
> >
> > https://computing.llnl.gov/tutorials/mpi/#Derived_Data_Types
> >
> > and a similar one here:
> >
> > http://static.msi.umn.edu/tutorial/scicomp/general/MPI/content6.html
> >
> > Gus Correa
> >
> >> On 01
dear George, dear Gus, dear all,
Could you please tell me where I can find a good example?
I am sorry but I can not understand the 3D array.
Really Thanks
Diego
On 15 January 2015 at 20:13, George Bosilca wrote:
>
> On Jan 15, 2015, at 06:02 , Diego Avesani wrote:
>
> Dear G
gt; with MPI 3, but for what you're doing 1 and 2 are more than enough.]
>
>
> On 01/13/2015 09:22 AM, Diego Avesani wrote:
>
>> Dear all,
>>
>> I had some wonderful talking about MPI_type_create_struct adn
>> isend\irecv with
>> Gilles, Gustavo, Georg
Dear all,
I had some wonderful talking about MPI_type_create_struct adn isend\irecv
with
Gilles, Gustavo, George, Gus, Tom and Jeff. Now all is more clear and my
program works.
Now I have another question. In may program I have matrix:
*QQMLS(:,:,:) *that is allocate as
*ALLOCATE(QQMLS(9,npt,18
Dear all,
thanks a lot,
really Thanks a lot
Diego
On 9 January 2015 at 19:56, Jeff Squyres (jsquyres)
wrote:
> On Jan 9, 2015, at 1:54 PM, Diego Avesani wrote:
>
> > What does it mean "YMMV"?
>
> http://netforbeginners.about.com/od/xyz/f/What-Is-YMMV.htm
>
>
What does it mean "YMMV"?
On 9 January 2015 at 19:44, Jeff Squyres (jsquyres)
wrote:
> YMMV
Diego
Dear Jeff, Dear George, Dear Dave, Dear all,
so, is it correct to use *MPI_Waitall *?
Is my program ok now? Do you see other problems?
Thanks again
Diego
On 9 January 2015 at 18:39, George Bosilca wrote:
> I totally agree with Dave here. Moreover, based on the logic exposed by
> Jeff, there
he MPI_Isend and MPI_Irecv is incorrect.
>> Also printing the supposedly received values (line 127) is incorrect as
>> there is no reason to have the non-blocking receive completed at that
>> moment.
>> >
>> > George.
>> >
>> >
>> > On Thu,
fter the MPI_Isend and MPI_Irecv is incorrect.
> Also printing the supposedly received values (line 127) is incorrect as
> there is no reason to have the non-blocking receive completed at that
> moment.
> >
> > George.
> >
> >
> > On Thu, Jan 8, 2015 at 5:06 PM,
Dear Gus, Dear All,
so are you suggesting to use DOUBLE PRECISION and not REAL(dp)?
Thanks again
Diego
On 9 January 2015 at 00:02, Gus Correa wrote:
> On 01/08/2015 05:50 PM, Diego Avesani wrote:
>
>> Dear George, Dear all,
>> what are the other issues?
>&g
e_create_resized for the purposes of a small
>> example. The specific use of it in this program appears to be superfluous.
>>
>>
>>
>>
>>
>> On Jan 8, 2015, at 4:26 AM, Gilles Gouaillardet <
>> gilles.gouaillar...@iferc.org> wrote:
>>
>&
:
> With array bounds checking your program returns an out-of-bounds error
> in the mpi_isend call at line 104. Looks like 'send_request' should be
> indexed with 'sendcount', not 'icount'.
>
> T. Rosmond
>
>
>
> On Thu, 2015-01-0
the attachment
Diego
On 8 January 2015 at 19:44, Diego Avesani wrote:
> Dear all,
> I found the error.
> There is a Ndata2send(iCPU) instead of Ndata2recv(iCPU).
> In the attachment there is the correct version of the program.
>
> Only one thing, could do you check if the
Dear all,
I found the error.
There is a Ndata2send(iCPU) instead of Ndata2recv(iCPU).
In the attachment there is the correct version of the program.
Only one thing, could do you check if the use of MPI_WAITALL
and MPI_BARRIER is correct?
Thanks again
Diego
On 8 January 2015 at 18:48, Diego
Dear all,
thanks thank a lot, I am learning a lot.
I have written a simple program that send vectors of integers from a CPU to
another.
The program is written (at least for now) for 4 CPU.
The program is quite simple:
Each CPU knows how many data has to send to the other CPUs. This info is
than
gt; my bad, i should have passed displacements(1) to MPI_Type_create_struct
>
> here is an updated version
>
> (note you have to use a REQUEST integer for MPI_Isend and MPI_Irecv,
> and you also have to call MPI_Wait to ensure the requests complete)
>
> Cheers,
>
>
irecv subroutines
(you can find it in the attachment)
Thanks again
Diego
On 5 January 2015 at 15:54, Diego Avesani wrote:
> Dear Gilles,
>
> Thanks, Thanks a lot.
> Now is more clear.
>
> Again, thanks a lot
>
> Diego
>
>
MODULE MOD_PRECISION
integer, parame
Dear Gilles,
Thanks, Thanks a lot.
Now is more clear.
Again, thanks a lot
Diego
ed version
>
> Cheers,
>
> Gilles
>
> On 2015/01/05 2:32, Diego Avesani wrote:
>
> Dear Gilles, Dear all,
>
> It works. The only thing that is missed is:
>
> *CALL MPI_Finalize(MPI%iErr)*
>
> at the end of the program.
>
> Now, I have to test it sending so
> On Sun, Jan 4, 2015 at 6:48 PM, Diego Avesani
> wrote:
>
>> Dear Gilles, Dear all,
>>
>> in the attachment you can find the program.
>>
>> What do you meam "remove mpi_get_address(dummy) from all displacements".
>>
>> Thanks for all yo
your program instead of a snippet ?
>
> Gus is right about using double precision vs real and -r8
>
> Cheers,
>
> Gilles
>
> Diego Avesani さんのメール:
> Dear Gilles Dear all,
>
> I have done all that to avoid to pedding an integer, as suggested by
> George.
> I
ligned
> And the lower bound should be zero.
>
> BTW, which compiler are you using ?
> Is tParticle object a common ?
> iirc, intel compiler aligns types automatically, but not commons, and that
> means MPI_Type_create_struct is not aligned as it should most of the time.
>
&
dear all,
I have a problem with MPI_Type_Create_Struct and MPI_TYPE_CREATE_RESIZED.
I have this variable type:
* TYPE tParticle*
* INTEGER :: ip*
* REAL :: RP(2)*
* REAL :: QQ(2)*
* ENDTYPE tParticle*
Then I define:
Nstruct=3
*ALLOCATE(TYPES(Nstruct))*
*ALLOCATE(LENGTHS(
dear All,
sorry for your time. I have found the solution:
icount=1
DO iCPU=0,MPI%nCPU-1
IF(iCPU.NE.MPI%rank)THEN
iTag=iCPU
CALL
MPI_ISEND(Ndata2send(iCPU),1,MPI_INTEGER,iCPU,iTag,MPI_COMM_WORLD,send_request(icount),MPI%iErr)
icount=icount+1
ENDIF
ENDDO
ic
Dear all,
I have the following problem:
In my program each rank has a vector, where the position indicates where I
have to send the data.
For example for rank 0, I have:
*ALLOCATE(Ndata2send(0,MPI%nCPU-1)*
*Ndata2send(:) = 0,10,10,16*
where MPI%nCPU is the number of cPU, in my case 4
Thins m
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