Optimized peer-to-peer file transfers on a multi-node computer system

• US 9,167,034 B2
• Filed: 11/12/2007
• Issued: 10/20/2015
• Est. Priority Date: 11/12/2007
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Barsness, Eric Lawrence, Darrington, David L., Peters, Amanda, Santosuosso, John Matthew
• Primary Examiner(s): Kim, Hee Soo
• Application Number:
  US11/938,415
• Publication Number:
  US 20090125616A1
• Time in Patent Office: 2,899 Days
• Field of Search: 709/222, 709/217, 709/219
• US Class Current: 1/1
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/1063 Discovery through centralising entities
• CPC Class Codes: H04L 67/1076 Resource dissemination mechanisms or network resource keeping policies for optimal resource availability in the overlay network

Abstract

A method and apparatus performs peer-to-peer file transfers on a High Performance Computing (HPC) cluster such as a Beowulf cluster. A peer-to-peer file tracker (PPFT) allows operating system, application and data files to be moved from a pre-loaded node to another node of the HPC cluster. A peer-to-peer (PTP) client is loaded into the nodes to facilitate PTP file transfers to reduce loading on networks, network switches and file servers to reduce the time needed to load the nodes with these files to increase overall efficiency of the multi-node computing system. The selection of the nodes participating in file transfers can be based on network topology, network utilization, job status and predicted network/computer utilization. This selection can be dynamic, changing during the file transfers as resource conditions change. The policies used to choose resources can be configured by an administrator.

Claims

1. A multi-node computer cluster comprising:

a plurality of nodes that each comprise a processor and memory;

a network with network switches connecting the plurality of nodes;

a service node connected to the plurality of nodes;

a peer-to-peer file tracker in the service node that manages the plurality of nodes to accomplish a peer-to-peer file transfer between at least two of the plurality of nodes over the network;

a peer-to-peer client residing in the at least two of the plurality of nodes, where the peer-to-peer client manages data flow in the peer-to-peer file transfer; and

wherein the peer-to-peer client uses resource attributes from a resource manager and from a scheduler received in a file tracker update to dynamically adjust which nodes of the plurality of nodes participate in the file transfer while the file transfer is in progress by restarting segments of the transfer from a new source node.

2. The multi-node computer cluster of claim 1 wherein the multi-node computer cluster is diskless cluster computer system with the network being a private network.

3. The multi-node computer cluster of claim 1 wherein the resource attributes include the following:

network topology, network utilization, network switch loading, file server loading, job status and historical information related to the resource attributes.

4. The multi-node computer cluster of claim 1 further comprising policies for the resource attributes that are set by a system administrator to indicate how to manage the peer-to-peer file transfer.

5. The multi-node computer cluster of claim 1 wherein the peer-to-peer transfer copies an operating system kernel from a source node to a destination node on the cluster in a process of booting the destination node.

6. The multi-node computer cluster of claim 1 wherein the peer-to-peer client dynamically adjusts the nodes participating in the file transfer while the file transfer is in progress.

7. The multi-node computer cluster of claim 1 wherein a requested file in the file transfer is an operating system kernel used to boot a destination node.

8. A computer implemented method for a peer-to-peer file transfer in a plurality of nodes in a multi-node computer cluster, the method comprising the steps of:

reading file server records for a requested file to peer-to-peer transfer between the plurality of nodes in the multi-node computer cluster;

selecting a plurality of participating nodes from the plurality of nodes for the peer-to-peer transfer based on resource attributes;

transferring file segments of the requested file from the plurality of participating nodes based on the file server records;

a peer-to-peer client dynamically adjusting the nodes participating in the file transfer in response to a file tracker update with updated resource attributes by restarting segments of the transfer from a new source node.

9. The computer implemented method of claim 8 wherein the requested file is an operating system kernel used to boot a destination node.

10. The computer implemented method of claim 8 wherein the resource attributes include the following:

network topology, network utilization, network switch loading, file server loading, job status and historical information related to the resource attributes.

11. The computer implemented method of claim 8 wherein the resource attributes are used in conjunction with policies determined by a system administrator.

12. A computer-readable article of manufacture comprising:

a peer-to-peer file tracker for execution in a service node connected to a plurality of nodes in a computer cluster, the peer-to-peer tracker managing the plurality of nodes to accomplish a peer-to-peer file transfer between at least two of the plurality of nodes over a private network;

a peer-to-peer client residing in the at least two of the plurality of nodes, where the peer-to-peer client manages data flow in the peer-to-peer transfer;

wherein the peer-to-peer client uses resource attributes from a resource manager and from a scheduler received in a file tracker update and in response to the file tracker update the peer-to-peer client dynamically adjusts nodes participating in the file transfer; and

tangible computer recordable media bearing the peer-to-peer file tracker and the peer-to-peer client.

13. The article of manufacture of claim 12 wherein the resource attributes include the following:

network topology, network utilization, network switch loading, file server loading, job status and historical information related to the resource attributes.

14. The article of manufacture of claim 12 wherein the peer-to-peer client determines the nodes to participate in the peer-to-peer file transfer by selecting a plurality of file server records to send to the peer-to-peer client that contain information for the selected nodes.

15. The article of manufacture of claim 12 further comprising policies for the resource attributes that are set by a system administrator to indicate how to manage the peer-to-peer file transfer.

16. The article of manufacture of claim 12 wherein the peer-to-peer file transfer copies an operating system kernel from a source node to a destination node on the cluster in a process of booting the destination node.

17. The article of manufacture of claim 12 wherein the file being transferred in the peer-to-peer file transfer is an operating system kernel used to boot a destination node.