ERROR: cpu distribution

[clchen@ouc_edu_cn]

Hi,

I have a problem when I run CCSM on SGI altix3700 with Intel compiler.
I run CCSM with no changes to any code, timesteps, initial conditions, except for the Makefile of ./model/bld/Macros.* and the number and distribution of processors.
Macros.Linux-ia64 shows:
**********************************
# CVS $Id: Macros.Linux-ia64,v 1.11 2004/07/12 14:09:50 gerardo Exp $
# CVS $Source: /fs/cgd/csm/models/CVS.REPOS/shared/bld/Macros.Linux,v $
# CVS $Name: ccsm3_0 $
#===============================================================================
# Makefile macros for "Linux-ia64", supports Intel 8.x compilers
#===============================================================================

# INCLDIR := -I. -I/usr/local/include
-I$(INCROOT) -I/include

# SLIBS := -L/usr/local/lib -lnetcdf -lmpi -lscs
INCLDIR := -I. -I/usr/local/include -I/usr/include -I/usr/local/netcdf3.6.2/include -I$(INCROOT)
SLIBS := -L/usr/local/lib -L/usr/lib -L/usr/local/netcdf3.6.2/lib -lnetcdf -lmpi -lscs
ULIBS := -L$(LIBROOT) -lesmf -lmct -lmpeu -lmph
CPP := NONE
CPPFLAGS :=
CPPDEFS := -DSGI_IA64 -DLINUX -DNO_SHR_VMATH
CC := icc
CFLAGS := -c -cpp -O2 -ftz -tpp2 -fno-alias -fno-fnalias -ip
FIXEDFLAGS :=
FREEFLAGS :=
FC := ifort
FFLAGS := -c -cpp -r8 -i4 -O2 -ftz -mp -convert big_endian

MOD_SUFFIX := mod
LD := $(FC)
LDFLAGS := -Wl,-noinhibit-exec -Vaxlib -posixlib
AR := ar

ifeq ($(MODEL),pop)
CPPDEFS := $(CPPDEFS) -DPOSIX -Dimpvmix -Dcoupled
-DNPROC_X=$(NX) -DNPROC_Y=$(NY)
FIXEDFLAGS := -132 -assume byterecl
endif

ifeq ($(MODEL),csim)
CPPDEFS := $(CPPDEFS) -Dcoupled -DNPROC_X=$(NX) -DNPROC_Y=$(NY) -D_MPI
FIXEDFLAGS := -132 -assume byterecl
endif

ifeq ($(THREAD),TRUE)
# CPPFLAGS := $(CPPFLAGS) -D_OPENMP
# -D_OPENMP is redundant if -openmp is enabled in ifort/efc/icc/ecc
CPPDEFS := $(CPPDEFS) -DTHREADED_OMP
# FREEFLAGS := $(FREEFLAGS) -mp
FREEFLAGS := $(FREEFLAGS) -openmp
FIXEDFLAGS := $(FIXEDFLAGS) -openmp
CFLAGS := $(CFLAGS) -openmp
# LDFLAGS := $(LDFLAGS) -mp
LDFLAGS := $(LDFLAGS) -openmp
endif

**********************************
When I setting the cpu distribution in file env_mach.altix:
set ntasks_atm = 8; set nthrds_atm = 1
set ntasks_lnd = 4; set nthrds_lnd = 1
set ntasks_ice = 2; set nthrds_ice = 1
set ntasks_ocn = 4; set nthrds_ocn = 1
set ntasks_cpl = 1; set nthrds_cpl = 1
the running is ok. But when I change
set ntasks_cpl = 1; set nthrds_cpl = 1
to
set ntasks_cpl = 2; set nthrds_cpl = 1

the running is ended with an error:
**************************************
(main) -------------------------------------------------------------------------
(main) partial map data init, frac init
(main) -------------------------------------------------------------------------
(cpl_map_init) initialize map: map_Fo2a
(cpl_map_init) scatter matrix by column...
[1] Exit 1 mpirun -v -d /lun/home/ccl/model/T42/A2/all -np 2 cpl : -np 2 csim : -np 4 clm ...
Tue Apr 21 14:18:54 CST 2009 -- CSM EXECUTION HAS FINISHED
Model did not complete - see cpl.log.090421-141801
**************************************

the last few lines in cpl.log.090421-141801 are:
*************************************
(main) -------------------------------------------------------------------------
(main) partial map data init, frac init
(main) -------------------------------------------------------------------------
(cpl_map_init) initialize map: map_Fo2a
(cpl_map_read) reading mapping matrix data...
(cpl_map_read) * file name : map_gx1v3_to_T42_aave_da_010709.nc
(cpl_map_read) * matrix dimensions rows x cols : 122880 x 8192
(cpl_map_read) * number of non-zero elements: 145548
(cpl_map_read) ... done reading file
(cpl_map_init) skipping map test, dbug level = 1
(cpl_map_init) scatter matrix by column...
*************************************

It means that task of cpl can not be larger than 1. What is the problem? How can I fix it?
Thanks!