Abstract: A computer-implemented method (and associated computing system and computer program product) comprises distributing computing workloads among a plurality of processing units of a computing system. The method further comprises, responsive to detecting a reduced power supply capacity of the computing system: determining, based on historical workload information, a first workload of the computing workloads to prioritize the completion thereof, and prioritizing power delivery to a first processing unit of the plurality of processing units to which the first workload is distributed. The method further comprises powering down the first processing unit responsive to completion of the first workload.

Abstract: An error mechanism provides stored error information to assist in determining the cause of failure of a storage device such as a hard disk drive. The error mechanism gathers information surrounding an error event from various software and hardware components in the system. An event command is sent to the storage device that includes the gathered information. The storage device stores the gathered information from the event command in a log on the storage device. After the storage device is removed from the system the error information in the log can be used to determine the cause of the failure. The event command may be standardized into an existing industry communication protocol or be vendor specific.

Abstract: A method is disclosed, as well as a related system and computer program product, for use with a plurality of networked computing devices comprising a plurality of physical ports. The method comprises determining that a non-volatile memory (NVM) device is removably connected with a first port owned by a first virtual machine associated with a first owning entity, and determining whether the NVM device was previously connected with a second port owned by a second virtual machine associated with a second owning entity. The method further comprises determining whether the NVM device has a predefined association with a first instruction file that specifies one or more restrictions for accessing data stored in the NVM device. The method further comprises providing, to the first virtual machine, access to the data stored in the NVM device in accordance with the one or more restrictions.

Abstract: A method is disclosed for use with a plurality of networked computing devices comprising a plurality of physical ports. The method comprises determining that a non-volatile memory (NVM) device is removably connected with a first port owned by a first virtual machine associated with a first owning entity, and determining whether the NVM device was previously connected with a second port owned by a second virtual machine associated with a second owning entity. The method further comprises determining whether the NVM device has a predefined association with a first instruction file that specifies one or more restrictions for accessing data stored in the NVM device. The method further comprises providing, to the first virtual machine, access to the data stored in the NVM device in accordance with the one or more restrictions.

Abstract: An optimizer controller controls a hypervisor optimizer to regulate operation of the optimizer to insure the optimizer does not negatively impact operation of software applications. The optimizer controller monitors applications and application performance to determine whether to turn on or off specific optimization features for specific applications. The optimizer may also notify a user of potential problems. The optimizer controller may utilize optimization rules for specific applications that set the conditions for controlling the optimizer. The rules may be dynamically changed based on observed performance and trends of the applications.

Abstract: A computer-implemented method (and associated computing system and computer program product) comprises distributing computing workloads among a plurality of processing units of a computing system. The method further comprises, responsive to detecting a reduced power supply capacity of the computing system: determining, based on historical workload information, a first workload of the computing workloads to prioritize the completion thereof, and prioritizing power delivery to a first processing unit of the plurality of processing units to which the first workload is distributed. The method further comprises powering down the first processing unit responsive to completion of the first workload.

Abstract: A method is disclosed for use with a plurality of networked computing devices comprising a plurality of physical ports. The method comprises determining that a non-volatile memory (NVM) device is removably connected with a first port owned by a first virtual machine associated with a first owning entity, and determining whether the NVM device was previously connected with a second port owned by a second virtual machine associated with a second owning entity. The method further comprises determining whether the NVM device has a predefined association with a first instruction file that specifies one or more restrictions for accessing data stored in the NVM device. The method further comprises providing, to the first virtual machine, access to the data stored in the NVM device in accordance with the one or more restrictions.

Abstract: An operating system monitors a performance metric of a direct memory access (DMA) engine on an I/O adapter to update a translation table used during DMA operations. The translation table is used during a DMA operation to map a virtual address provided by the I/O adapter to a physical address of a data page in the memory modules. If the DMA engine is being underutilized, the operating system updates the translation table such that a virtual address maps to physical address corresponding to a memory location in a more energy efficient memory module. However, if the DMA engine is over-utilized, the operating system may update the translation table such that the data used in the DMA engine is stored in memory modules that provide quicker access times—e.g., the operating system may map virtual addresses to physical addresses in DRAM rather than phase change memory.

Abstract: A method is disclosed, as well as a related system and computer program product, for use with a plurality of networked computing devices comprising a plurality of physical ports. The method comprises determining that a non-volatile memory (NVM) device is removably connected with a first port owned by a first virtual machine associated with a first owning entity, and determining whether the NVM device was previously connected with a second port owned by a second virtual machine associated with a second owning entity. The method further comprises determining whether the NVM device has a predefined association with a first instruction file that specifies one or more restrictions for accessing data stored in the NVM device. The method further comprises providing, to the first virtual machine, access to the data stored in the NVM device in accordance with the one or more restrictions.

Abstract: An operating system monitors a performance metric of a direct memory access (DMA) engine on an I/O adapter to update a translation table used during DMA operations. The translation table is used during a DMA operation to map a virtual address provided by the I/O adapter to a physical address of a data page in the memory modules. If the DMA engine is being underutilized, the operating system updates the translation table such that a virtual address maps to physical address corresponding to a memory location in a more energy efficient memory module. However, if the DMA engine is over-utilized, the operating system may update the translation table such that the data used in the DMA engine is stored in memory modules that provide quicker access times—e.g., the operating system may map virtual addresses to physical addresses in DRAM rather than phase change memory.

Abstract: In an embodiment, a current internal corrosion level at a current time is read from an internal corrosion sensor that is internal to a computer. An internal corrosion difference is calculated between the current internal corrosion level and a previous internal corrosion level. Upon determining that the internal corrosion difference is more than a first threshold amount, a first action is performed that decreases an internal temperature of the computer. In a further embodiment, upon determining that the internal corrosion difference is less than a second threshold amount, a second action is performed that allows the internal temperature of the computer to increase.

Abstract: An error mechanism provides stored error information to assist in determining the cause of failure of a storage device such as a hard disk drive. The error mechanism gathers information surrounding an error event from various software and hardware components in the system. An event command is sent to the storage device that includes the gathered information. The storage device stores the gathered information from the event command in a log on the storage device. After the storage device is removed from the system the error information in the log can be used to determine the cause of the failure. The event command may be standardized into an existing industry communication protocol or be vendor specific.

Abstract: A pre-initialized value of contents of a memory location is identified. A load value of contents loaded from the memory location by execution of a first instruction that loads from the memory location is also identified. A comparison is made between the load value and the pre-initialized value. Based on the comparison, a determination is made that the load value and the pre-initialized value are the same. In response to this determination, it is indicated that the first instruction contains an uninitialized memory reference.

Abstract: An error mechanism provides stored error information to assist in determining the cause of failure of a storage device such as a hard disk drive. The error mechanism gathers information surrounding an error event from various software and hardware components in the system. An event command is sent to the storage device that includes the gathered information. The storage device stores the gathered information from the event command in a log on the storage device. After the storage device is removed from the system the error information in the log can be used to determine the cause of the failure. The event command may be standardized into an existing industry communication protocol or be vendor specific.

Abstract: An optimizer controller controls a hypervisor optimizer to regulate operation of the optimizer to insure the optimizer does not negatively impact operation of software applications. The optimizer controller monitors applications and application performance to determine whether to turn on or off specific optimization features for specific applications. The optimizer may also notify a user of potential problems. The optimizer controller may utilize optimization rules for specific applications that set the conditions for controlling the optimizer. The rules may be dynamically changed based on observed performance and trends of the applications.

Abstract: An error mechanism provides stored error information to assist in determining the cause of failure of a storage device such as a hard disk drive. The error mechanism gathers information surrounding an error event from various software and hardware components in the system. An event command is sent to the storage device that includes the gathered information. The storage device stores the gathered information from the event command in a log on the storage device. After the storage device is removed from the system the error information in the log can be used to determine the cause of the failure. The event command may be standardized into an existing industry communication protocol or be vendor specific.

Abstract: Method and apparatus for enhancing an executable is disclosed herein. In one embodiment, the method includes instrumenting an executable with additional program code to detect run-time errors, and while running the instrumented executable within a debug environment generating the run-time errors detected by the additional program code, upon reaching a breakpoint, identifying any of the run-time errors which occurred while executing a function in which the breakpoint is located, and transmitting an indication of the identified run-time errors to the debugging environment.

Abstract: Method and apparatus for enhancing an executable is disclosed herein. In one embodiment, the method includes instrumenting an executable with additional program code to detect run-time errors, and while running the instrumented executable within a debug environment generating the run-time errors detected by the additional program code, upon reaching a breakpoint, identifying any of the run-time errors which occurred while executing a function in which the breakpoint is located, and transmitting an indication of the identified run-time errors to the debugging environment.

Abstract: A pre-initialized value of contents of a memory location is identified. A load value of contents loaded from the memory location by execution of a first instruction that loads from the memory location is also identified. A comparison is made between the load value and the pre-initialized value. Based on the comparison, a determination is made that the load value and the pre-initialized value are the same. In response to this determination, it is indicated that the first instruction contains an uninitialized memory reference.

Abstract: The present disclosure relates to maintaining assertions in an integrated development environment (IDE) tool. According to one embodiment, the IDE receives a request to add an assertion at a specified location within source code of an application from a user interacting with an integrated development environment (IDE) tool. The source code is stored in a first file associated with a development project. The IDE tool receives a definition for the assertion and stores the definition for the assertion in a second file associated with the development project. The IDE tool creates an association in the development project between the source code of the application and the assertion.