Abstract: A method of responding to requests using stream processing includes, responsive to a client request, assigning a processing thread for handling the client request. A return connection is established within the processing thread. A server request derived from the client request is sent to a stream server configured to interact with a plurality of stream processing nodes. The server request includes a thread identifier specifying the processing thread. The processing thread for handling the client request is maintained in an idle state pending a write response message from the stream server. Responsive to receiving the write response message comprising a stream processing result and the thread identifier from the stream server, the processing thread specified by the thread identifier is returned to an active state using a processor. A client response comprising the stream processing result is returned to the client over the return connection.

Abstract: Responsive to a client request, a processing thread for handling the client request is assigned. Responsive to the client request, a server request is sent to a stream server configured to interact with a plurality of stream processing nodes. The processing thread is maintained in an idle state pending a write response message from the stream server. The processing thread is returned to an active state responsive to receiving the write response message including a stream processing result from the stream server.

Abstract: A method for managing a network queue memory includes receiving sensor information about the network queue memory, predicting a memory failure in the network queue memory based on the sensor information, and outputting a notification through a plurality of nodes forming a network and using the network queue memory, the notification configuring communications between the nodes.

Abstract: A system for responding to requests using stream processing comprises a computer readable storage medium having computer readable program code embodied therewith and a processor coupled to the computer readable storage medium. Responsive to a client request, a processing thread is assigned for handling the client request. A return connection is established within the processing thread. A server request derived from the client request to a stream server configured to interact with a plurality of stream processing nodes is sent, and the server request comprises a thread identifier specifying the processing thread. The processing thread for handling the client request is maintained in an idle state pending a write response message from the stream server. Responsive to receiving the write response message comprising a stream processing result and the thread identifier from the stream server, the processing thread is returned to an active state.

Abstract: A method for selective duplication of subtasks in a high-performance computing system includes: monitoring a health status of one or more nodes in a high-performance computing system, where one or more subtasks of a parallel task execute on the one or more nodes; identifying one or more nodes as having a likelihood of failure which exceeds a first prescribed threshold; selectively duplicating the one or more subtasks that execute on the one or more nodes having a likelihood of failure which exceeds the first prescribed threshold; and notifying a messaging library that one or more subtasks were duplicated.

Abstract: A computer hardware system configured to respond to requests using stream processing includes a HTTP stream server including at least one processor. The at least one processor is configured to initiate and/or perform the following. Responsive to a server request received from a server, a stream processing request is sent to a first stream processing node. Responsive to a create response message received from a second stream processing node, a stream processing result is correlated with the server request. A write response message including the stream processing result is sent to the server. The stream processing request is derived from the server request and includes a request identifier associated with the server request. The create response message includes the stream processing result and the request identifier.

Abstract: A method for responding to requests using stream processing includes, responsive to a server request received from a server, a stream processing request being sent to a first stream processing node. Responsive to a create response message received from a second stream processing node, a stream processing result is correlated with the server request. A write response message including the stream processing result is sent to the server. The stream processing request is derived from the server request and includes a request identifier associated with the server request. The create response message includes the stream processing result and the request identifier.

Abstract: A computing system for converting software code into an executable program include an expanding preprocessor that receives software code including debug statements and expands the debug statements into conditions that include a static variable and that must be met before a trace contained in the statement is executed, the expanding preprocessor creating an expanded code output. The system also includes a replacement preprocessor coupled to the expanding preprocessor and receiving the expanded code, the replacement preprocessor forming replaced code by replacing one or more occurrences of the static variables with a unique variable name and a compiler that compiles the replacement code to create an executable.

Abstract: A method for providing notification of a predictable memory failure includes the steps of: obtaining information regarding at least one condition associated with a memory; calculating a memory failure probability as a function of the obtained information; calculating a failure probability threshold; and generating a signal when the memory failure probability exceeds the failure probability threshold, the signal being indicative of a predicted future memory failure.

Abstract: A method for faulty memory utilization in a memory system includes: obtaining information regarding memory health status of at least one memory page in the memory system; determining an error tolerance of the memory page when the information regarding memory health status indicates that a failure is predicted to occur in an area of the memory system affecting the memory page; initiating a migration of data stored in the memory page when it is determined that the data stored in the memory page is non-error-tolerant; notifying at least one application regarding a predicted operating system failure and/or a predicted application failure when it is determined that data stored in the memory page is non-error-tolerant and cannot be migrated; and notifying at least one application regarding the memory failure predicted to occur when it is determined that data stored in the memory page is error-tolerant.

Abstract: A system call utility may be provided on a first operating system managing a first hardware computing entity. The system call utility may take as an argument a pointer to a computer code a second operating system established to run on the first hardware computing entity. The first operating system is enabled to execute the computer code natively on the first hardware computing entity, and return a result of the computer code executed on the first hardware computing entity to the second operating system.

Abstract: Enabling a Light-Weight Kernel (LWK) to run in a virtualized environment on a Full-Weight Kernel (FWK), in one aspect, may include replacing a FWK loader, e.g., FWK's dynamic library loader or linker, with a LWK library on a first computing entity for an application allocated to run on one or more second computing entities. The LWK library may be enabled to initialize the one or more second computing entities and associated memory allocated to run the application under the LWK library. The LWK library may be enabled to manage the one or more second computing entities and said associated memory and resources needed by the application.

Abstract: A method of responding to requests using stream processing includes, responsive to a client request, assigning a processing thread for handling the client request. A return connection is established within the processing thread. A server request derived from the client request is sent to a stream server configured to interact with a plurality of stream processing nodes. The server request includes a thread identifier specifying the processing thread. The processing thread for handling the client request is maintained in an idle state pending a write response message from the stream server. Responsive to receiving the write response message comprising a stream processing result and the thread identifier from the stream server, the processing thread specified by the thread identifier is returned to an active state using a processor. A client response comprising the stream processing result is returned to the client over the return connection.

Abstract: A method for responding to requests using stream processing includes, responsive to a server request received from a server, a stream processing request being sent to a first stream processing node. Responsive to a create response message received from a second stream processing node, a stream processing result is correlated with the server request. A write response message including the stream processing result is sent to the server. The stream processing request is derived from the server request and includes a request identifier associated with the server request. The create response message includes the stream processing result and the request identifier.

Abstract: A system for responding to requests using stream processing comprises a computer readable storage medium having computer readable program code embodied therewith and a processor coupled to the computer readable storage medium. Responsive to a client request, a processing thread is assigned for handling the client request. A return connection is established within the processing thread. A server request derived from the client request to a stream server configured to interact with a plurality of stream processing nodes is sent, and the server request comprises a thread identifier specifying the processing thread. The processing thread for handling the client request is maintained in an idle state pending a write response message from the stream server. Responsive to receiving the write response message comprising a stream processing result and the thread identifier from the stream server, the processing thread is returned to an active state.

Abstract: A computer hardware system configured to respond to requests using stream processing includes a HTTP stream server including at least one processor. The at least one processor is configured to initiate and/or perform the following. Responsive to a server request received from a server, a stream processing request is sent to a first stream processing node. Responsive to a create response message received from a second stream processing node, a stream processing result is correlated with the server request. A write response message including the stream processing result is sent to the server. The stream processing request is derived from the server request and includes a request identifier associated with the server request. The create response message includes the stream processing result and the request identifier.

Abstract: A method of responding to requests using stream processing can include receiving a server request from a server, wherein the server is configured to generate the server request responsive to a client request, and generating a request identifier associated with the server request. The method can include, responsive to the server request, sending a stream processing request derived from the server request to a first stream processing node. The stream processing request can include the request identifier. Responsive to receiving a create response message including a stream processing result and the request identifier from a second stream processing node, the stream processing result can be correlated with the server request. A write response message specifying the stream processing result can be sent to the server.

Abstract: A system for responding to requests using stream processing can include a processor configured to initiate executable operations including receiving a server request from a server, wherein the server is configured to generate the server request responsive to a client request, generating a request identifier associated with the server request, and, responsive to the server request, sending a stream processing request derived from the server request to a first stream processing node. The stream processing request can include the request identifier. Responsive to receiving a create response message including a stream processing result and the request identifier from a second stream processing node, the stream processing result can be correlated with the server request. A write response message specifying the stream processing result can be sent to the server.

Abstract: A method, system and computer program product of setting up a virtual connection at run time. The method includes the steps of: analyzing a topology of an application to determine at least one port pair where the port pair comprises an output port of a first operator and an input port of a second operator; configuring a first auxiliary operator to receive data from a first operator; configuring a second auxiliary operator to send data to a second operator; deploying the first operator, the second operator, the first auxiliary operator and the second auxiliary operator; receiving a function address of the second auxiliary operator; and sending the function address of the second auxiliary operator to a first destination; where at least one of the steps is carried out using a computer device so that the virtual connection is setup at run time.

Abstract: Enabling a Light-Weight Kernel (LWK) to run in a virtualized environment on a Full-Weight Kernel (FWK), in one aspect, may include replacing a FWK loader, e.g., FWK's dynamic library loader or linker, with a LWK library on a first computing entity for an application allocated to run on one or more second computing entities. The LWK library may be enabled to initialize the one or more second computing entities and associated memory allocated to run the application under the LWK library. The LWK library may be enabled to manage the one or more second computing entities and said associated memory and resources needed by the application.