e9d533e62ecb should fix these warnings. They are harmless, as we cannot be reaching the context needed for them to have an impact because collectives communications with 0 bytes are trimmed out in the MPI layer.
Thanks for reporting. George. On Tue, Jun 13, 2017 at 12:43 PM, r...@open-mpi.org <r...@open-mpi.org> wrote: > Configured master with no options given to it (i.e., out-of-the-box) - the > key being that it defaults to --disable-debug - and drowned in warnings: > > *base/coll_base_scatter.c:* In function ‘ > *ompi_coll_base_scatter_intra_binomial*’: > *base/coll_base_scatter.c:90:28:* *warning: *‘*sgap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = tempbuf *-* sgap; > *^* > *base/coll_base_scatter.c:117:24:* *warning: *‘*rgap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = tempbuf *-* rgap; > *^* > *base/coll_base_alltoall.c:* In function ‘ > *mca_coll_base_alltoall_intra_basic_inplace*’: > *base/coll_base_alltoall.c:69:35:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > tmp_buffer = allocated_buffer *-* gap; > *^* > *base/coll_base_alltoall.c:* In function ‘ > *ompi_coll_base_alltoall_intra_bruck*’: > *base/coll_base_alltoall.c:230:26:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > tmpbuf = tmpbuf_free *-* gap; > *^* > *base/coll_base_allgather.c:* In function ‘ > *ompi_coll_base_allgather_intra_bruck*’: > *base/coll_base_allgather.c:179:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > shift_buf = free_buf *-* gap; > *^* > *base/coll_base_gather.c:* In function ‘ > *ompi_coll_base_gather_intra_binomial*’: > *base/coll_base_gather.c:91:28:* *warning: *‘*rgap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = tempbuf *-* rgap; > *^* > *base/coll_base_gather.c:114:24:* *warning: *‘*sgap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = tempbuf *-* sgap; > *^* > *base/coll_base_reduce_scatter.c:* In function ‘ > *ompi_coll_base_reduce_scatter_intra_nonoverlapping*’: > *base/coll_base_reduce_scatter.c:83:36:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > tmprbuf = tmprbuf_free *-* gap; > *^* > *base/coll_base_reduce.c:* In function ‘*ompi_coll_base_reduce_generic*’: > *base/coll_base_reduce.c:124:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > inbuf[0] = inbuf_free[0] *-* gap; > *^* > *base/coll_base_allreduce.c:* In function ‘ > *ompi_coll_base_allreduce_intra_recursivedoubling*’: > *base/coll_base_allreduce.c:159:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > inplacebuf = inplacebuf_free *-* gap; > *^* > *base/coll_base_reduce_scatter.c:* In function ‘ > *ompi_coll_base_reduce_scatter_intra_basic_recursivehalving*’: > *base/coll_base_reduce_scatter.c:178:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > recv_buf = recv_buf_free *-* gap; > *^* > *base/coll_base_reduce.c:* In function ‘ > *ompi_coll_base_reduce_intra_in_order_binary*’: > *base/coll_base_reduce.c:549:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > tmpbuf = tmpbuf_free *-* gap; > *^* > *base/coll_base_reduce.c:* In function ‘ > *ompi_coll_base_reduce_intra_basic_linear*’: > *base/coll_base_reduce.c:653:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > pml_buffer = free_buffer *-* gap; > *^* > *base/coll_base_reduce_scatter.c:* In function ‘ > *ompi_coll_base_reduce_scatter_intra_ring*’: > *base/coll_base_reduce_scatter.c:513:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > accumbuf = accumbuf_free *-* gap; > > *coll_basic_allgather.c:* In function ‘*mca_coll_basic_allgather_inter*’: > *coll_basic_allgather.c:112:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > tmpbuf = tmpbuf_free *-* gap; > *^* > *coll_basic_exscan.c:* In function ‘*mca_coll_basic_exscan_intra*’: > *coll_basic_exscan.c:92:33:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > reduce_buffer = free_buffer *-* gap; > *^* > *coll_basic_reduce_scatter_block.c:* In function ‘ > *mca_coll_basic_reduce_scatter_block_intra*’: > *coll_basic_reduce_scatter_block.c:90:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > recv_buf = recv_buf_free *-* gap; > *^* > *coll_basic_reduce_scatter_block.c:* In function ‘ > *mca_coll_basic_reduce_scatter_block_inter*’: > *coll_basic_reduce_scatter_block.c:161:23:* *warning: *‘*gap*’ may be > used uninitialized in this function [*-Wmaybe-uninitialized*] > lbuf = tmpbuf *-* gap; > *^* > *coll_basic_allreduce.c:* In function ‘*mca_coll_basic_allreduce_inter*’: > *coll_basic_allreduce.c:109:29:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > pml_buffer = tmpbuf *-* gap; > *^* > *coll_basic_reduce_scatter.c:* In function ‘ > *mca_coll_basic_reduce_scatter_intra*’: > *coll_basic_reduce_scatter.c:113:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > recv_buf = recv_buf_free *-* gap; > *^* > *coll_basic_scan.c:* In function ‘*mca_coll_basic_scan_intra*’: > *coll_basic_scan.c:82:34:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > pml_buffer = free_buffer *-* gap; > *^* > *coll_basic_reduce.c:* In function ‘*mca_coll_basic_reduce_log_intra*’: > *coll_basic_reduce.c:130:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > pml_buffer = free_buffer *-* gap; > *^* > *coll_basic_reduce.c:* In function ‘*mca_coll_basic_reduce_lin_inter*’: > *coll_basic_reduce.c:314:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > pml_buffer = free_buffer *-* gap; > *^* > *coll_basic_reduce_scatter.c:* In function ‘ > *mca_coll_basic_reduce_scatter_inter*’: > *coll_basic_reduce_scatter.c:419:23:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > lbuf = tmpbuf *-* gap; > *^* > *coll_inter_gather.c:* In function ‘*mca_coll_inter_gather_inter*’: > *coll_inter_gather.c:71:26:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > ptmp = ptmp_free *-* gap; > *^* > *coll_inter_allreduce.c:* In function ‘*mca_coll_inter_allreduce_inter*’: > *coll_inter_reduce.c:* In function ‘*mca_coll_inter_reduce_inter*’: > *coll_inter_allreduce.c:63:25:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > pml_buffer = tmpbuf *-* gap; > *^* > *coll_inter_reduce.c:69:27:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > pml_buffer = free_buffer *-* gap; > *^* > *coll_inter_gatherv.c:* In function ‘*mca_coll_inter_gatherv_inter*’: > *coll_inter_gatherv.c:103:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = ptmp_free *-* gap; > *^* > *coll_inter_scatterv.c:* In function ‘*mca_coll_inter_scatterv_inter*’: > *coll_inter_scatterv.c:83:34:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = ptmp_free *-* gap; > *^* > *coll_inter_allgatherv.c:* In function ‘*mca_coll_inter_allgatherv_inter* > ’: > *coll_inter_allgatherv.c:92:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = ptmp_free *-* gap; > *^* > *coll_inter_scatter.c:* In function ‘*mca_coll_inter_scatter_inter*’: > *coll_inter_scatter.c:70:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = ptmp_free *-* gap; > *^* > *coll_inter_allgather.c:* In function ‘*mca_coll_inter_allgather_inter*’: > *coll_inter_allgather.c:66:26:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ptmp = ptmp_free *-* gap; > *^* > *nbc_ialltoallv.c:* In function ‘*ompi_coll_libnbc_ialltoallv*’: > *nbc_ialltoallv.c:329:38:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > res = NBC_Sched_send ((void *)*(-gap)*, true, counts[rpeer], type, > rpeer, schedule, false); > *~^~~~~* > *nbc_ialltoallv.c:52:13:* *note: *‘*gap*’ was declared here > ptrdiff_t *gap*, span; > *^~~* > *nbc_ireduce_scatter_block.c:* In function ‘ > *ompi_coll_libnbc_ireduce_scatter_block*’: > *nbc_ireduce_scatter_block.c:97:51:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > redbuf = (char *) handle->tmpbuf + span_align *-* gap; > *^* > *nbc_ireduce.c:* In function ‘*ompi_coll_libnbc_ireduce*’: > *nbc_ireduce.c:328:21:* *warning: *‘*gap*’ may be used uninitialized in > this function [*-Wmaybe-uninitialized*] > lbuf = (void *)*(-gap)*; > *~^~~~~* > *nbc_ireduce.c:306:13:* *note: *‘*gap*’ was declared here > ptrdiff_t *gap*; > *^~~* > *nbc_ireduce.c:116:34:* *warning: *‘*gap*’ may be used uninitialized in > this function [*-Wmaybe-uninitialized*] > redbuf = (char*)span_align *-* gap; > *^* > *nbc_iallreduce.c:* In function ‘*ompi_coll_libnbc_iallreduce*’: > *nbc_iallreduce.c:328:21:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > lbuf = (void *)*(-gap)*; > *~^~~~~* > *nbc_iallreduce.c:70:19:* *note: *‘*gap*’ was declared here > ptrdiff_t span, *gap*; > *^~~* > *nbc_ireduce_scatter_block.c:* In function ‘ > *ompi_coll_libnbc_ireduce_scatter_block_inter*’: > *nbc_ireduce_scatter_block.c:269:31:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > rbuf = (char *)*(span_align-gap)*; > *~~~~~~~~~~~^~~~~* > *nbc_ireduce.c:* In function ‘*ompi_coll_libnbc_ireduce_inter*’: > *nbc_ireduce.c:245:73:* *warning: *‘*gap*’ may be used uninitialized in > this function [*-Wmaybe-uninitialized*] > res = red_sched_linear (rank, rsize, root, sendbuf, recvbuf, (void *) > *(-gap)*, count, datatype, op, schedule, handle); > > *~^~~~~* > *nbc_iallreduce.c:* In function ‘*ompi_coll_libnbc_iallreduce_inter*’: > *nbc_iallreduce.c:667:23:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > rbuf = (void *)*(-gap)*; > *~^~~~~* > *nbc_iallreduce.c:213:19:* *note: *‘*gap*’ was declared here > ptrdiff_t span, *gap*; > *^~~* > *nbc_ialltoallw.c:* In function ‘*ompi_coll_libnbc_ialltoallw*’: > *nbc_ialltoallw.c:320:36:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > (void *)*(-gap)*, true, counts[peer], > types[peer], > *~^~~~~* > *nbc_ialltoallw.c:270:13:* *note: *‘*gap*’ was declared here > ptrdiff_t *gap*; > *^~~* > *nbc_iscan.c:* In function ‘*ompi_coll_libnbc_iscan*’: > *nbc_iscan.c:106:38:* *warning: *‘*gap*’ may be used uninitialized in > this function [*-Wmaybe-uninitialized*] > res = NBC_Sched_recv ((void *)*(-gap)*, true, count, datatype, > rank-1, schedule, true); > *~^~~~~* > *nbc_iexscan.c:* In function ‘*ompi_coll_libnbc_iexscan*’: > *nbc_iexscan.c:124:62:* *warning: *‘*gap*’ may be used uninitialized in > this function [*-Wmaybe-uninitialized*] > res = NBC_Sched_op (recvbuf, false, (void *)*(-gap)*, > true, count, > *~^~~~~* > *nbc_ireduce_scatter.c:* In function ‘*ompi_coll_libnbc_ireduce_scatter*’: > *nbc_ireduce_scatter.c:101:30:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > lbuf = (char *)*(span_align - gap)*; > *~~~~~~~~~~~~^~~~~~* > *nbc_ireduce_scatter.c:* In function ‘ > *ompi_coll_libnbc_ireduce_scatter_inter*’: > *nbc_ireduce_scatter.c:270:31:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > rbuf = (char *)*(span_align-gap)*; > *~~~~~~~~~~~^~~~~* > *coll_sm_reduce.c:* In function ‘*reduce_inorder*’: > *coll_sm_reduce.c:321:33:* *warning: *‘*gap*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > sbuf = inplace_temp *-* gap; > *^* > *coll_spacc_reduce.c:* In function ‘ > *mca_coll_spacc_reduce_intra_redscat_gather*’: > *coll_spacc_reduce.c:120:27:* *warning: *‘*gap*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > tmp_buf = tmp_buf_raw *-* gap; > *^* > *osc_pt2pt_data_move.c:* In function ‘*ompi_osc_pt2pt_process_receive*’: > *osc_pt2pt_data_move.c:1645:9:* *warning: *variable ‘*rc*’ set but not > used [*-Wunused-but-set-variable*] > int *rc*; > *^~* > *osc_rdma_component.c:1288:12:* *warning: *‘*ompi_osc_rdma_get_info*’ > defined but not used [*-Wunused-function*] > static int *ompi_osc_rdma_get_info* (struct ompi_win_t *win, struct > opal_info_t **info_used) > *^~~~~~~~~~~~~~~~~~~~~~* > *osc_rdma_component.c:1254:12:* *warning: *‘*ompi_osc_rdma_set_info*’ > defined but not used [*-Wunused-function*] > static int *ompi_osc_rdma_set_info* (struct ompi_win_t *win, struct > opal_info_t *info) > *^~~~~~~~~~~~~~~~~~~~~~* > *osc_rdma_comm.c:* In function ‘*ompi_osc_rdma_put*’: > *osc_rdma_comm.c:804:73:* *warning: *‘*offset*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *offset+len*, > > *~~~~~~^~~~* > *osc_rdma_comm.c:797:20:* *note: *‘*offset*’ was declared here > ptrdiff_t len, *offset*; > *^~~~~~* > *osc_rdma_comm.c:* In function ‘*ompi_osc_rdma_rput*’: > *osc_rdma_comm.c:804:73:* *warning: *‘*offset*’ may be used uninitialized > in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *offset+len*, > > *~~~~~~^~~~* > *osc_rdma_comm.c:797:20:* *note: *‘*offset*’ was declared here > ptrdiff_t len, *offset*; > *^~~~~~* > *osc_rdma_comm.c:* In function ‘*ompi_osc_rdma_get*’: > *osc_rdma_comm.c:844:78:* *warning: *‘*source_lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, source_disp, > *source_span+source_lb*, > > *~~~~~~~~~~~^~~~~~~~~~* > *osc_rdma_comm.c:828:28:* *note: *‘*source_lb*’ was declared here > ptrdiff_t source_span, *source_lb*; > *^~~~~~~~~* > *osc_rdma_comm.c:* In function ‘*ompi_osc_rdma_rget*’: > *osc_rdma_comm.c:844:78:* *warning: *‘*source_lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, source_disp, > *source_span+source_lb*, > > *~~~~~~~~~~~^~~~~~~~~~* > *osc_rdma_comm.c:828:28:* *note: *‘*source_lb*’ was declared here > ptrdiff_t source_span, *source_lb*; > *^~~~~~~~~* > *osc_rdma_accumulate.c:* In function ‘*ompi_osc_rdma_get_accumulate*’: > *osc_rdma_accumulate.c:1040:78:* *warning: *‘*lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *target_span+lb*, &target_address, &target_handle); > > *~~~~~~~~~~~^~~* > *osc_rdma_accumulate.c:1024:15:* *note: *‘*lb*’ was declared here > ptrdiff_t *lb*, origin_extent, target_span; > *^~* > *osc_rdma_accumulate.c:* In function ‘*ompi_osc_rdma_rget_accumulate*’: > *osc_rdma_accumulate.c:1040:78:* *warning: *‘*lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *target_span+lb*, &target_address, &target_handle); > > *~~~~~~~~~~~^~~* > *osc_rdma_accumulate.c:1024:15:* *note: *‘*lb*’ was declared here > ptrdiff_t *lb*, origin_extent, target_span; > *^~* > *osc_rdma_accumulate.c:* In function ‘*ompi_osc_rdma_raccumulate*’: > *osc_rdma_accumulate.c:1040:78:* *warning: *‘*lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *target_span+lb*, &target_address, &target_handle); > > *~~~~~~~~~~~^~~* > *osc_rdma_accumulate.c:1024:15:* *note: *‘*lb*’ was declared here > ptrdiff_t *lb*, origin_extent, target_span; > *^~* > *osc_rdma_accumulate.c:* In function ‘*ompi_osc_rdma_accumulate*’: > *osc_rdma_accumulate.c:1040:78:* *warning: *‘*lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *target_span+lb*, &target_address, &target_handle); > > *~~~~~~~~~~~^~~* > *osc_rdma_accumulate.c:1024:15:* *note: *‘*lb*’ was declared here > ptrdiff_t *lb*, origin_extent, target_span; > *^~* > *osc_rdma_accumulate.c:* In function ‘*ompi_osc_rdma_fetch_and_op*’: > *osc_rdma_accumulate.c:1040:78:* *warning: *‘*lb*’ may be used > uninitialized in this function [*-Wmaybe-uninitialized*] > ret = osc_rdma_get_remote_segment (module, peer, target_disp, > *target_span+lb*, &target_address, &target_handle); > > *~~~~~~~~~~~^~~* > *osc_rdma_accumulate.c:1024:15:* *note: *‘*lb*’ was declared here > ptrdiff_t *lb*, origin_extent, target_span; > > > > _______________________________________________ > devel mailing list > devel@lists.open-mpi.org > https://rfd.newmexicoconsortium.org/mailman/listinfo/devel >
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