Amazon Technologies, Inc.

Cisco Technology, Inc.

Pankaj Kumar Rai

Robert Charles Swanson

Narayanaswami Ganapathy

Srinivas Pitta

Filippo Sironi

Shrawan Chittoor Surender

Siddartha Gundeti

Tsung Ho Wu

Nandagopal Sathyanarayanan

Maulik Kapuria

Yuhui Zheng

Sang Phill Park

A host server computer with an uncorrectable memory error can be repaired without a reboot operation. While initially booting a hypervisor, a special software Application Programming Interface (API) can be loaded between a BIOS System Management Mode (SMM) code and the hypervisor. Once the host server computer is booted and a number of virtual machines are executing, a memory error (e.g., uncorrectable error correction code (UECC)) can occur. In response, the hypervisor calls into the special software API identifying the defective memory rows that the BIOS needs to repair. The BIOS starts a soft Post Package Repair (PPR) process on those rows and gives back control to the hypervisor. When the repair is completed, the hypervisor loads a scrubbing virtual machine and validates that the memory is corrected. After the repair is validated, the hypervisor allows the available partition to take a new customer instance.

Runtime memory repair without requiring a reboot of a server computer

Methods and systems for configuring a local switch and a remote switch configured as peers. The method includes: receiving a configuration for configuring the local switch and the remote switch; checking if resources are available for the configuration on the local switch; when resources are available on the local switch, reserving those resources; checking if resources are available for the configuration of the remote switch; when resources are available on the remote switch, reserving those resources; and applying the configuration to the local switch and the remote switch when resources are available on the local switch and the remote switch.

Method and apparatus to predict configuration viability and dynamically manage multi-dimensional system scale in MSDC switches

Growing community of inventors

San Jose, CA, United States of America

Pankaj Kumar Rai