+++ /dev/null
-
-Quick Notes : getting started with the examples
-===============================================
-
-..:: What you need ::..
-
-- a platform file describing the environment. You can go to
- the Platform Description Archive (http://pda.gforge.inria.fr/) to
- get an existing one or generate your own platform with the
- SIMULACRUM tool (see 'Download' section there).
-
-- a hostfile. Like in almost all MPI distributions, the hostfile
- list the hosts which the processes will be mapped on. At present,
- the format is one hostname per line. The hostnames must be present
- in the platform file.
-
- Note: the mapping of MPI processes (ranks) follows the order of the
- hostfile. Rank 0 is mapped to first hostname in hostfile, Rank 1
- on second hostname, etc. If n (where -np n) is greater than the
- number l of lines in hostfile, the mapping is done round-robin.
-
-
-..:: Try the examples ::..
-
-Go to :
-# cd simgrid/examples/smpi
-
-To compile an example :
-# ../../src/smpi/smpicc bcast.c -o bcast
-
-Use 'smpirun' to use it then:
-
-To run it :
-# ../../src/smpi/smpirun -np 3 ./bcast
-node 0 has value 17
-node 2 has value 3
-node 1 has value 3
-node 1 has value 17
-node 0 has value 17
-node 2 has value 17
-[0.000000] [smpi_kernel/INFO] simulation time 4.32934e-05
-
-
-To run it with a specific platform:
-# ../../src/smpi/smpirun -np 3 -platform platform.xml -hostfile hostfile ./bcast
-
-Note that by default, the examples use the installed version of
-simgrid. So please install it before playing with the examples, or set
-a LD_LIBRARY_PATH variable pointing to src/.libs
-
-
-
-
-
-Network Model
-=============
-
-SMPI runs with a cluster-specific network model. This model is piece-wise
-linear: each segment is described by a latency correction factor and a
-bandwidth correction factor (both are multiplicative and apply to the values
-given in the platform file).
-
-To compute the values for a specific cluster, we provide the script
-contrib/network_model/calibrate_piecewise.py. This script takes four mandatory
-command line parameters:
-
-1) a SKaMPI data file for a Pingpong_Send_Recv experiment
-2) the number of links between the nodes involved in the SKaMPI measurments
-3) the latency value of the links, as given in the platform file
-4) the bandwidth value of the links, as given in the platform file
-
-It also takes an arbitrary number of optional parameters, each being a segment
-limit on which to compute the correction factors.
-
-The script then outputs the latency and bandwidth factor for each segment that
-best fit the experimental values. You can then apply these factors in the
-network model by modifying the values in src/surf/network.c (after the "SMPI
-callbacks" comment, lines 44 to 77).
-
-
-
-
-
-What's implemented
-==================
-
-As a proof of concept, and due to lack of time, the implementation is far from complete
-with respect to a MPI-1.2 specification. Here is what is implemented so far. Please update
-if you can.
-
-
-* MPI_Datatypes:
- MPI_BYTE
- MPI_CHAR / MPI_SIGNED_CHAR / MPI_UNSIGNED_CHAR
- MPI_SHORT / MPI_UNSIGNED_SHORT
- MPI_INT / MPI_UNSIGNED
- MPI_LONG / MPI_UNSIGNED_LONG
- MPI_LONG_LONG / MPI_LONG_LONG_INT / MPI_UNSIGNED_LONG_LONG
- MPI_FLOAT
- MPI_DOUBLE
- MPI_LONG_DOUBLE
- MPI_WCHAR
- MPI_C_BOOL
- MPI_INT8_T / MPI_UINT8_T
- MPI_INT16_T / MPI_UINT16_T
- MPI_INT32_T / MPI_UINT32_T
- MPI_INT64_T / MPI_UINT64_T
- MPI_C_FLOAT_COMPLEX / MPI_C_COMPLEX
- MPI_C_DOUBLE_COMPLEX
- MPI_C_LONG_DOUBLE_COMPLEX
- MPI_AINT
- MPI_OFFSET
- MPI_FLOAT_INT
- MPI_LONG_INT
- MPI_DOUBLE_INT
- MPI_SHORT_INT
- MPI_2INT
- MPI_LONG_DOUBLE_INT
-
-* Type management:
- MPI_Type_size
- MPI_Type_get_extent
- MPI_Type_extent
- MPI_Type_lb
- MPI_Type_ub
-
-* MPI_Op:
- MPI_LAND
- MPI_LOR
- MPI_LXOR
- MPI_SUM
- MPI_PROD
- MPI_MIN
- MPI_MAX
- MPI_MAXLOC
- MPI_MINLOC
- MPI_BAND
- MPI_BOR
- MPI_BXOR
- User defined operations: MPI_Op_create / MPI_Op_free
-
-* Group management:
- MPI_Group_free
- MPI_Group_rank
- MPI_Group_size
- MPI_Group_translate_ranks
- MPI_Group_compare
- MPI_Group_union
- MPI_Group_intersection
- MPI_Group_difference
- MPI_Group_incl
- MPI_Group_excl
- MPI_Group_range_incl
-
-* Communicator management:
- MPI_Comm_rank
- MPI_Comm_size
- MPI_Comm_group
- MPI_Comm_compare
- MPI_Comm_dup
- MPI_Comm_create
- MPI_Comm_free
-
-* primitives:
- MPI_Init / MPI_Init_thread
- MPI_Query_thread / MPI_Is_thread_main
- MPI_Finalize
- MPI_Abort
- MPI_Address
- MPI_Wtime
- MPI_Irecv
- MPI_Recv
- MPI_Recv_init
- MPI_Isend
- MPI_Send
- MPI_Send_init
- MPI_Sendrecv
- MPI_Sendrecv_replace
- MPI_Start
- MPI_Startall
- MPI_Request_free
- MPI_Test
- MPI_Testany
- MPI_Wait
- MPI_Waitall
- MPI_Waitany
- MPI_Waitsome
- MPI_Barrier
- MPI_Bcast
- MPI_Gather
- MPI_Gatherv
- MPI_Scatter
- MPI_Scatterv
- MPI_Reduce
- MPI_Scan
- MPI_Reduce_Scatter
- MPI_Allgather
- MPI_Allgatherv
- MPI_Allreduce
- MPI_Alltoall
- MPI_Alltoallv
