[mvapich-discuss] Odd process to CPU mapping
Vladimir Florinski
vaf0001 at uah.edu
Tue Nov 4 15:57:11 EST 2014
Here goes:
Linux node62e 3.16.6-203.fc20.x86_64 #1 SMP Sat Oct 25 12:44:32 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux
CA 'mlx4_0'
CA type: MT4099
Number of ports: 2
Firmware version: 2.11.550
Hardware version: 0
Node GUID: 0x0002c90300ebbbf0
System image GUID: 0x0002c90300ebbbf3
Port 1:
State: Active
Physical state: LinkUp
Rate: 56
Base lid: 18
LMC: 0
SM lid: 1
Capability mask: 0x02514868
Port GUID: 0x0002c90300ebbbf1
Link layer: InfiniBand
Port 2:
State: Down
Physical state: Disabled
Rate: 10
Base lid: 0
LMC: 0
SM lid: 0
Capability mask: 0x02514868
Port GUID: 0x0002c90300ebbbf2
Link layer: InfiniBand
-------------CPU AFFINITY-------------
RANK:0 CPU_SET: 0
RANK:1 CPU_SET: 2
RANK:2 CPU_SET: 4
RANK:3 CPU_SET: 6
RANK:4 CPU_SET: 0
RANK:5 CPU_SET: 2
RANK:6 CPU_SET: 4
RANK:7 CPU_SET: 6
RANK:8 CPU_SET: 9
RANK:9 CPU_SET: 11
RANK:10 CPU_SET: 13
RANK:11 CPU_SET: 15
RANK:12 CPU_SET: 9
RANK:13 CPU_SET: 11
RANK:14 CPU_SET: 13
RANK:15 CPU_SET: 15
-------------------------------------
MVAPICH2-2.1a Parameters
---------------------------------------------------------------------
PROCESSOR ARCH NAME : MV2_ARCH_INTEL_GENERIC
PROCESSOR FAMILY NAME : MV2_CPU_FAMILY_INTEL
PROCESSOR MODEL NUMBER : 45
HCA NAME : MV2_HCA_MLX_CX_FDR
HETEROGENEOUS HCA : NO
MV2_VBUF_TOTAL_SIZE : 16384
MV2_IBA_EAGER_THRESHOLD : 16384
MV2_RDMA_FAST_PATH_BUF_SIZE : 5120
MV2_PUT_FALLBACK_THRESHOLD : 8192
MV2_GET_FALLBACK_THRESHOLD : 0
MV2_EAGERSIZE_1SC : 4096
MV2_SMP_EAGERSIZE : 65537
MV2_SMPI_LENGTH_QUEUE : 262144
MV2_SMP_NUM_SEND_BUFFER : 256
MV2_SMP_BATCH_SIZE : 8
---------------------------------------------------------------------
MVAPICH2 All Parameters
MV2_COMM_WORLD_LOCAL_RANK : 0
PMI_ID : 0
MPIRUN_RSH_LAUNCH : 1
MPISPAWN_GLOBAL_NPROCS : 32
MPISPAWN_MPIRUN_HOST : node62e
MPISPAWN_MPIRUN_ID : 12707
MPISPAWN_NNODES : 2
MPISPAWN_WORKING_DIR : (deleted)
USE_LINEAR_SSH : 1
PMI_PORT : node62e:40351
MV2_3DTORUS_SUPPORT : 0
MV2_NUM_SA_QUERY_RETRIES : 20
MV2_NUM_SLS : 8
MV2_DEFAULT_SERVICE_LEVEL : 0
MV2_PATH_SL_QUERY : 0
MV2_USE_QOS : 0
MV2_ALLGATHER_BRUCK_THRESHOLD : 524288
MV2_ALLGATHER_RD_THRESHOLD : 81920
MV2_ALLGATHER_REVERSE_RANKING : 1
MV2_ALLGATHERV_RD_THRESHOLD : 0
MV2_ALLREDUCE_2LEVEL_MSG : 262144
MV2_ALLREDUCE_SHORT_MSG : 2048
MV2_ALLTOALL_MEDIUM_MSG : 16384
MV2_ALLTOALL_SMALL_MSG : 2048
MV2_ALLTOALL_THROTTLE_FACTOR : 4
MV2_BCAST_TWO_LEVEL_SYSTEM_SIZE : 64
MV2_GATHER_SWITCH_PT : 0
MV2_INTRA_SHMEM_REDUCE_MSG : 2048
MV2_KNOMIAL_2LEVEL_BCAST_MESSAGE_SIZE_THRESHOLD : 2048
MV2_KNOMIAL_2LEVEL_BCAST_SYSTEM_SIZE_THRESHOLD : 64
MV2_KNOMIAL_INTER_LEADER_THRESHOLD : 65536
MV2_KNOMIAL_INTER_NODE_FACTOR : 4
MV2_KNOMIAL_INTRA_NODE_FACTOR : 4
MV2_KNOMIAL_INTRA_NODE_THRESHOLD : 131072
MV2_RED_SCAT_LARGE_MSG : 524288
MV2_RED_SCAT_SHORT_MSG : 64
MV2_REDUCE_2LEVEL_MSG : 16384
MV2_REDUCE_SHORT_MSG : 8192
MV2_SCATTER_MEDIUM_MSG : 0
MV2_SCATTER_SMALL_MSG : 0
MV2_SHMEM_ALLREDUCE_MSG : 32768
MV2_SHMEM_COLL_MAX_MSG_SIZE : 131072
MV2_SHMEM_COLL_NUM_COMM : 8
MV2_SHMEM_COLL_NUM_PROCS : 16
MV2_SHMEM_COLL_SPIN_COUNT : 5
MV2_SHMEM_REDUCE_MSG : 4096
MV2_USE_BCAST_SHORT_MSG : 16384
MV2_USE_DIRECT_GATHER : 1
MV2_USE_DIRECT_GATHER_SYSTEM_SIZE_MEDIUM : 1024
MV2_USE_DIRECT_GATHER_SYSTEM_SIZE_SMALL : 384
MV2_USE_DIRECT_SCATTER : 1
MV2_USE_OSU_COLLECTIVES : 1
MV2_USE_OSU_NB_COLLECTIVES : 1
MV2_USE_KNOMIAL_2LEVEL_BCAST : 1
MV2_USE_KNOMIAL_INTER_LEADER_BCAST : 1
MV2_USE_SCATTER_RD_INTER_LEADER_BCAST : 1
MV2_USE_SCATTER_RING_INTER_LEADER_BCAST : 1
MV2_USE_SHMEM_ALLREDUCE : 1
MV2_USE_SHMEM_BARRIER : 1
MV2_USE_SHMEM_BCAST : 1
MV2_USE_SHMEM_COLL : 1
MV2_USE_SHMEM_REDUCE : 1
MV2_USE_TWO_LEVEL_GATHER : 1
MV2_USE_TWO_LEVEL_SCATTER : 1
MV2_USE_XOR_ALLTOALL : 1
MV2_DEFAULT_SRC_PATH_BITS : 0
MV2_DEFAULT_STATIC_RATE : 0
MV2_DEFAULT_TIME_OUT : -939063532
MV2_DEFAULT_MTU : 4
MV2_DEFAULT_PKEY : 0
MV2_DEFAULT_PORT : 1
MV2_DEFAULT_GID_INDEX : 0
MV2_DEFAULT_PSN : 0
MV2_DEFAULT_MAX_RECV_WQE : 128
MV2_DEFAULT_MAX_SEND_WQE : 64
MV2_DEFAULT_MAX_SG_LIST : 1
MV2_DEFAULT_MIN_RNR_TIMER : 12
MV2_DEFAULT_QP_OUS_RD_ATOM : 268701700
MV2_DEFAULT_RETRY_COUNT : 13108999
MV2_DEFAULT_RNR_RETRY : 51207
MV2_DEFAULT_MAX_CQ_SIZE : 40000
MV2_DEFAULT_MAX_RDMA_DST_OPS : 4
MV2_INITIAL_PREPOST_DEPTH : 10
MV2_IWARP_MULTIPLE_CQ_THRESHOLD : 32
MV2_NUM_HCAS : 1
MV2_NUM_NODES_IN_JOB : 2
MV2_NUM_PORTS : 1
MV2_NUM_QP_PER_PORT : 1
MV2_MAX_RDMA_CONNECT_ATTEMPTS : 10
MV2_ON_DEMAND_UD_INFO_EXCHANGE : 0
MV2_PREPOST_DEPTH : 64
MV2_HOMOGENEOUS_CLUSTER : 0
MV2_COALESCE_THRESHOLD : 6
MV2_DREG_CACHE_LIMIT : 0
MV2_IBA_EAGER_THRESHOLD : 16384
MV2_MAX_INLINE_SIZE : 168
MV2_MAX_R3_PENDING_DATA : 524288
MV2_MED_MSG_RAIL_SHARING_POLICY : 0
MV2_NDREG_ENTRIES : 1164
MV2_NUM_RDMA_BUFFER : 16
MV2_NUM_SPINS_BEFORE_LOCK : 2000
MV2_POLLING_LEVEL : 1
MV2_POLLING_SET_LIMIT : 64
MV2_POLLING_SET_THRESHOLD : 256
MV2_R3_NOCACHE_THRESHOLD : 32768
MV2_R3_THRESHOLD : 4096
MV2_RAIL_SHARING_LARGE_MSG_THRESHOLD : 16384
MV2_RAIL_SHARING_MED_MSG_THRESHOLD : 2048
MV2_RAIL_SHARING_POLICY : 4
MV2_RDMA_EAGER_LIMIT : 32
MV2_RDMA_FAST_PATH_BUF_SIZE : 5120
MV2_RDMA_NUM_EXTRA_POLLS : 1
MV2_RNDV_EXT_SENDQ_SIZE : 5
MV2_RNDV_PROTOCOL : 3
MV2_SMALL_MSG_RAIL_SHARING_POLICY : 0
MV2_SPIN_COUNT : 5000
MV2_SRQ_LIMIT : 30
MV2_SRQ_MAX_SIZE : 4096
MV2_SRQ_SIZE : 128
MV2_STRIPING_THRESHOLD : 16384
MV2_USE_COALESCE : 0
MV2_USE_XRC : 0
MV2_VBUF_MAX : -1
MV2_VBUF_POOL_SIZE : 256
MV2_VBUF_SECONDARY_POOL_SIZE : 128
MV2_VBUF_TOTAL_SIZE : 16384
MV2_USE_HWLOC_CPU_BINDING : 1
MV2_ENABLE_AFFINITY : 1
MV2_ENABLE_LEASTLOAD : 0
MV2_SMP_BATCH_SIZE : 8
MV2_SMP_EAGERSIZE : 65537
MV2_SMPI_LENGTH_QUEUE : 262144
MV2_SMP_NUM_SEND_BUFFER : 256
MV2_SMP_SEND_BUF_SIZE : 8192
MV2_USE_SHARED_MEM : 1
MV2_SHOW_ENV_INFO : 2
MV2_DEFAULT_PUT_GET_LIST_SIZE : 200
MV2_EAGERSIZE_1SC : 4096
MV2_GET_FALLBACK_THRESHOLD : 0
MV2_PIN_POOL_SIZE : 2097152
MV2_PUT_FALLBACK_THRESHOLD : 8192
MV2_ASYNC_THREAD_STACK_SIZE : 1048576
MV2_THREAD_YIELD_SPIN_THRESHOLD : 5
MV2_USE_HUGEPAGES : 1
---------------------------------------------------------------------
On Tue, Nov 4, 2014 at 2:36 PM, Jonathan Perkins <
perkinjo at cse.ohio-state.edu> wrote:
> On Tue, Nov 04, 2014 at 02:30:13PM -0600, Vladimir Florinski wrote:
> > Hi,
> >
> > We are seeing a rather odd behavior since upgrading to mvapich2-x version
> > 2.1 (RPM install). If one requests, say, 2 nodes with 2 octa-core CPUs
> per
> > node (32 cores in all), the software would place two processes on each
> core
> > of the first CPU in the node, leaving the second CPU idle. Because
> > hyperthreading is disabled, this policy does not make any sense at all.
> Any
> > ideas on what could be wrong here?
>
> Thanks for your note. This is not intended behavior. Can you send us
> the output of the following:
>
> uname -a
> ibstat
>
> The output from your run with MV2_SHOW_CPU_BINDING=1 set in your
> environment (you only need to send us the header showing the binding).
>
> The output from your run with MV2_SHOW_ENV_INFO=2 set may also be
> useful.
>
> --
> Jonathan Perkins
>
--
Vladimir Florinski
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