Jay Breen Email & Phone Number

Scottsdale, Az Usa

Scottsdale, Az

I am enjoying relaxing, traveling and doing projects around the house.

San Jose, Ca

Member of the Board of Trustees for the alumni association for the army group my father was a part of in Burma during WWII.

Bass singer for the Bay Area Chapter of the S.P.E.B.S.Q.S.A (Barbershop Harmony Society). The chorus is a top 10 International Competition Chorus that has also performed in the St. Petersburg area of Russia. The chapter was named the 2011 Far Western District Chapter of the Year. Am the chapter Barbershopper of the Year.

San Jose, Ca

Bass singer and Chapter Secretary for the Bay Area Chapter of the S.P.E.B.S.Q.S.A (Barbershop Harmony Society). The chorus is a top 10 International Competition Chorus that has also performed in the St. Petersburg area of Russia. The chapter was named the 2011 Far Western District Chapter of the Year.

Member of the LynxSecure kernel development group. Developed virtual PCI device configuration management subsystem for LynxSecureCreated layered configuration tool, allowing subcontractors to make target system configuration changes within guidelines established by the primary level administrator.Worked on virtual network driver for windows/linuxMade messaging subsystem SMP safeAdded locking to console to clean up simultaneous messages from multiple cpus.Wrote test suites to validate configuration, audit and flexible schedulingUpdated boot loader to handle images created by the layered configuration tool.Fixed problems in boot loader and initialization code.Added digital signatures to boot imageMake test library more SMP safe.

• Dramatically improved throughput by redesigning the virtual Console Driver to utilize new block I/O functionality provided in the firmware.• Developed Guest State reporting mechanism in the Kernel and worked with firmware engineers to implement.• Provided Kernel support to platform bring up teams.• Developed and maintained VNC server to provide shared consoles for the group’s test machines.• Resolved defects.• Improved CPU Boot design to minimize defects and improve performance.• Developed a debug environment for KADB to facilitate bring up.• Automated SIMICS OS startup flow, providing easy access to QE and others.• Implemented a ram disk dump scheme, to allow system dumps in simulation and bring up environments.• Automated ram disk creation and developed utilities for manipulating their content.• Developed strand enable/disable capabilities.

Member of the sun4v kernel development group.Member of Enterprise System Platform OS Development group Dramatically improved throughput by redesigning the virtual Console Driver to utilize new block I/O functionality provided in the firmware.Developed Guest State reporting mechanism in the Kernel and worked with firmware engineers to implement.Provided Kernel support to platform bring up teams.Developed and maintained VNC server to provide shared consoles for the group's test machines.Resolved defects.Improved CPU Boot design to minimize defects and improve performance.Developed a debug environment for KADB to facilitate bring up.Automated SIMICS OS startup flow, providing easy access to QE and others.Implemented a ram disk dump scheme, to allow system dumps in simulation and bring up environments.Automated ram disk creation and developed utilities for manipulating their content.Developed strand enable/disable capabilities.

Contract for bring up of NetBSD on a Power PC 750 platform. Designed M107 I2C Driver to support real time clock and NVRAM implementation of initialization data.Implemented an additional NVRAM driver to support SYSLOG disk.Improved the Kernel Debugger, and made it more useful to the engineering organization.Implemented I2C support for Power over Ethernet devices.Demonstrated hardware problems with I2C bus.Provided a driver for LM85 I2C device.

Improved a PCI based web accelerator appliance, supported for FreeBSD, Linux, Win2K and Solaris, Primarily responsible for providing software support to the hardware organization

Improved a PCI based web accelerator appliance, supported for FreeBSD, Linux, Win2K and Solaris, Primarily responsible for providing software support to the hardware organization Implemented functional PCI test fixture using WINDOWS based development environment, increasing finished product throughput and eliminating operator errors.Designed and wrote Kernel based host diagnostic driver.Developed an embedded diagnostic for a POWER PC networking system.Provided long term UNIX automated testing.Validated proprietary ASIC functionality.Enhanced I2C routines to read memory ROM within an embedded system, enabling larger memory module support from multiple vendors.

Responsible for many features in continuous availability of the UNIX Kernel. Concentrating in dynamic configuration management, I/O, and availability. Also developed boot prom for i960 family of systems. Mentored and assisted in the development of junior members of the team

Responsible for many features in continuous availability of the UNIX Kernel. Concentrating in dynamic configuration management, I/O, and availability. Mentored and assisted in the development of junior members of the team Enhanced SVR4 kernel code in reducing system failures of VM, dispatch, multiprocessing issues and device configuration.Created and maintained user level state managers to support all hardware configuration changes.Added automatic prom burn capability to allow incompatible boards to be updated to a system specified version, reducing costs due to avoidable board returns.Developed STREAMS based state machine to support Kanji terminals.Improved interactions between SCSI and virtual disk drivers during failure and recovery events.Mentored engineers of all levels in supporting hardware availability issues.Improved availability of dump/reboot time from 20 minutes to fewer than 3.Responsible for CPU prom code during new platform bring up by supporting hardware engineers with bring up of new modules.Developed a debugger which allowed reading and writing hardware registers, memory locations and access boot functions.Delivered software to support a new specific memory module for AT&T , and a $14M in profit for company.Led a team that upgraded CPU modules to HP/PA processor. Designed and developed Kernel changes for support of this new processor. Trained and mentored engineers to support project.Designed and developed boot prom code for Intel i860 RISC based XA/R CPU board.Developed PROM based software that initialized and booted Fault Tolerant systems as defined by Stratus.Utilized the Virtual Memory Architecture of the i860 to achieve seamless operation in three physical address spaces.Debugged PROM code using HP Logic Analyzers.Developed a memory state manager for UNIX fault tolerant services.