C – Troubleshooting InfiniPath MPI Troubleshooting

Q

There is no route to any host:

$ mpirun -np 2 -m ~/tmp/q mpi_latency 100 100

ssh: connect to host <nodename> port 22: No route to host

ssh: connect to host <nodename> port 22: No route to host

MPIRUN: All node programs ended prematurely without connecting to mpirun.

Node jobs have started, but one host couldn’t connect back to mpirun:

$ mpirun -np 2 -m ~/tmp/q mpi_latency 100 100

9139.psc_skt_connect: Error connecting to socket: No route to host <nodename> Cannot connect to mpirun within 60 seconds.

MPIRUN: Some node programs ended prematurely without connecting to mpirun.

MPIRUN: No connection received from 1 node process on node <nodename>

Node jobs have started, both hosts couldn’t connect back to mpirun:

$ mpirun -np 2 -m ~/tmp/q mpi_latency 100 100

9158.psc_skt_connect: Error connecting to socket: No route to host <nodename> Cannot connect to mpirun within 60 seconds. 6083.psc_skt_connect: Error connecting to socket: No route to host <nodename> Cannot connect to mpirun within 60 seconds.

MPIRUN: All node programs ended prematurely without connecting to mpirun.

$ mpirun -np 2 -m ~/tmp/q mpi_latency 1000000 1000000 MPIRUN: <nodename> node program unexpectedly quit: Exiting.

One program on one node died:

$ mpirun -np 2 -m ~/tmp/q mpi_latency 100000 1000000

MPIRUN: <nodename> node program unexpectedly quit: Exiting.

The quiescence detected message is printed when an MPI job does not seem to be making progress. The default timeout is 900 seconds. After this length of time all the node processes will be terminated. This timeout can be extended or disabled with the -quiescence-timeoutoption in mpirun.

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IB6054601-00 D

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Q-Logic IB6054601-00 D manual There is no route to any host, One program on one node died
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IB6054601-00 D specifications

The Q-Logic IB6054601-00 D is a high-performance InfiniBand adapter card designed for data centers and enterprise applications requiring robust connectivity and low-latency communication. This adapter is part of QLogic's extensive portfolio of networking solutions, catering to the needs of high-performance computing (HPC), cloud computing, and virtualization environments.

One of the standout features of the IB6054601-00 D is its capability to support data transfer rates of up to 56 Gbps. This makes it ideal for applications demanding large bandwidth and quick data processing. The adapter is optimized for RDMA (Remote Direct Memory Access) technology, which allows data to be transferred directly between the memory of different computers without involving the CPU. This reduces latency and CPU overhead, leading to enhanced overall system performance.

The architecture of the IB6054601-00 D includes support for a dual-port design, which offers increased bandwidth, redundancy, and fault tolerance. This dual-port configuration is especially advantageous for environments that require high availability and reliability, such as financial services and mission-critical applications.

The adapter utilizes advanced error detection and correction mechanisms, ensuring that data integrity is maintained during transmission. With features like adaptive routing and congestion management, the IB6054601-00 D is capable of optimizing the handling of data flows, thereby enhancing performance even under heavy loads.

In terms of compatibility, the Q-Logic IB6054601-00 D supports a wide range of operating systems and virtualization technologies, making it easy to integrate into diverse IT environments. It also includes drivers and software packages that facilitate seamless deployment and management.

In addition to high-speed connectivity, the adapter is designed with power efficiency in mind. It adheres to Energy Star regulations, helping organizations lower their operational costs while minimizing their environmental footprint.

Overall, the Q-Logic IB6054601-00 D stands out for its high throughput, low latency, and reliability. Its combination of advanced features and technologies positions it as an excellent choice for organizations looking to enhance their data center performance and maximize the efficiency of their network infrastructure. With the growing demands for faster and more efficient data transfer, solutions like the IB6054601-00 D are essential in meeting the evolving needs of modern enterprises.
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