The function used to gather data from all processes to the root process is MPI_Gather.

Here's a step-by-step explanation:

1. MPI_Gather is a collective communication routine in MPI (Message Passing Interface) that is used to gather data from all processes in a group and deliver it to a designated process, often referred to as the root process.

2. Each process (including the root) sends the contents of its send buffer to the root.

3. The root receives the messages and stores them in rank order in the receive buffer.

4. The other functions mentioned, MPI_Allgather, MPI_Bcast, and MPI_Scatter, have different uses. MPI_Allgather gathers data from all processes and delivers it to all processes. MPI_Bcast broadcasts a message from the process with rank "root" to all other processes in the group. MPI_Scatter sends data from one process to all processes in a group, distributing different data to

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The function used to gather data from all processes to the root process is MPI_Gather.

Here's a step-by-step explanation:

1. MPI_Gather is a collective communication routine in MPI (Message Passing Interface) that is used to gather data from all processes in a group and deliver it to a designated process, often referred to as the root process.

2. Each process (including the root) sends the contents of its send buffer to the root.

3. The root receives the messages and stores them in rank order in the receive buffer.

4. The other functions mentioned, MPI_Allgather, MPI_Bcast, and MPI_Scatter, have different uses. MPI_Allgather gathers data from all processes and delivers it to all processes. MPI_Bcast broadcasts a message from the process with rank "root" to all other processes in the group. MPI_Scatter sends data from one process to all processes in a group, distributing different data to

Knowee AI · Accepted Answer

The function used to gather data from all processes to the root process is MPI_Gather.

Here's a step-by-step explanation:

1. MPI_Gather is a collective communication routine in MPI (Message Passing Interface) that is used to gather data from all processes in a group and deliver it to a designated process, often referred to as the root process.

2. Each process (including the root) sends the contents of its send buffer to the root.

3. The root receives the messages and stores them in rank order in the receive buffer.

4. The other functions mentioned, MPI_Allgather, MPI_Bcast, and MPI_Scatter, have different uses. MPI_Allgather gathers data from all processes and delivers it to all processes. MPI_Bcast broadcasts a message from the process with rank "root" to all other processes in the group. MPI_Scatter sends data from one process to all processes in a group, distributing different data to

Which function is used to gather data from all processes to the root process?MPI_GatherMPI_AllgatherMPI_BcastMPI_Scatter

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Which function is used to gather data from all processes to the root process?

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