![KAWASHIMA Takahiro](/assets/img/avatar_default.png)
`MPI_WIN_TEST` must update the `flag` parameter to 0 when not all origin processes called `MPI_WIN_COMPLETE`. But sm OSC doesn't. If the caller initialize the `flag` argument to a non-0 value, the caller will receive the non-0 `flag` value.
`MPI_WIN_TEST` must update the `flag` parameter to 0 when not all origin processes called `MPI_WIN_COMPLETE`. But sm OSC doesn't. If the caller initialize the `flag` argument to a non-0 value, the caller will receive the non-0 `flag` value.