InfiniPath Interrupts Not Working

C – Troubleshooting Kernel and Initialization Issues

NOTE: This problem has been fixed in the 2.6.17 kernel.org kernel.

C.4.3

Driver Load Fails Due to Unsupported Kernel

If you try to load the InfiniPath driver on a kernel that InfiniPath software does not support, the load fails. Error messages similar to this appear:

modprobe: error inserting ’/lib/modules/2.6.3-1.1659-smp/kernel/drivers/infiniband/hw/ipath/ ib_ipath.ko’: -1 Invalid module format

To correct this, install one of the appropriate supported Linux kernel versions as listed in section 2.3.3, then reload the driver.

C.4.4

The InfiniPath driver will not be able to configure the InfiniPath link to a usable state unless interrupts are working. Check for this with the commands:

$ grep ib_ipath /proc/interrupts

Normal output will like similar to this:

CPU0	CPU1
0:	22577705	22968429	IO-APIC-edge	timer
4:	415	774	IO-APIC-edge	serial
8:	0	0	IO-APIC-edge	rtc
9:	0	0	IO-APIC-level	acpi
14:	15750	64559	IO-APIC-edge	ide0
15:	0	23	IO-APIC-edge	ide1
169:	533817	921	IO-APIC-level	eth0
177:	0	22767	IO-APIC-level	eth1
185:	364263	0	IO-APIC-level	ib_ipath
193:	0	0	IO-APIC-level	libata
201:	0	0	IO-APIC-level	ohci_hcd:usb1, ohci_hcd:usb2
NMI:	45641	45570
LOC:	45540410	45540372
ERR:	0
MIS:	0

If there is no output at all, driver initialization has failed. For further information on driver problems, see appendix C.4.1, appendix C.4.3, or appendix C.4.6.

However, if the output appears similar to one of these lines, then interrupts are not being delivered to the driver:

66:	0	0	PCI-MSI	ib_ipath
185:	0	0	IO-APIC-level	ib_ipath

NOTE: The output you see may vary depending on board type, distribution, or update level.

IB6054601-00 D

C-9

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.

Q-Logic IB6054601-00 D manual Driver Load Fails Due to Unsupported Kernel

Models: IB6054601-00 D

Driver Load Fails Due to Unsupported Kernel