Gene Amdahl

Gene was a man who built computers.

He worked for a big company called IBM. He also started his own company. He wanted to make machines that were fast. He found that there are limits to how fast they can go. This is a special rule about computer speed. He helped make many big machines. These machines do a lot of work. He was a very smart builder. He lived a long and busy life.

Gene Amdahl was a man who built computers.

He was born in South Dakota. He studied physics and engineering. He even built his first computer in college. We call this machine WISC.

Gene worked for a big company called IBM. He helped design many large machines. Later, he left IBM to start his own company. This was the Amdahl Corporation. His company made computers that worked with IBM machines. These were faster and cheaper to use. By 1979, his company had 6,000 workers.

Gene is famous for a rule called Amdahl's law. This rule explains how fast a computer can work. It shows that there are limits to speed. Even if you add many parts to work at once, there is a limit. This is true for parallel computing. That means many parts working together on a task. He also started other companies like Trilogy Systems. He spent his life finding new ways to make computers better.

Gene Amdahl was a famous American computer architect.

He spent his life designing ways for machines to think. He is best known for his work on mainframe computers. These are very large and powerful computers used by big organizations. Amdahl also created a special rule called Amdahl's law. This rule helps scientists understand the limits of computer speed. It explains why adding more parts to a task does not always make it faster. This is a very important idea in the world of computer science.

His work followed a path of constant learning and building. First, he studied engineering physics at South Dakota State University. He later studied theoretical physics at the University of Wisconsin–Madison. In 1950, he and a friend named Charlie Davidson had a big idea. They wanted to build a digital computer of their own design. They worked with professors to make this dream a reality. This led to his first machine, the Wisconsin Integrally Synchronized Computer, or WISC. He used these skills to design many famous machines at IBM.

Gene Amdahl's career had many different chapters. He worked at IBM for many years on projects like the IBM 704. He also worked on a project called Stretch, which became the IBM 7030. In 1970, he left IBM to start the Amdahl Corporation. He set this company up in Sunnyvale, California. His new company made machines that could work with IBM hardware. These machines were often faster and cheaper for customers to use. By 1979, his company was very large and had 6,000 employees.

He was a very successful businessman and inventor. Amdahl Corporation sold over $1 billion of its machines by 1979. He also started other companies like Trilogy Systems and Andor International. He even co-founded Commercial Data Servers in 1996. These companies tried to find new ways to make computers smaller and better. He received many honors for his hard work. He was named an IBM Fellow in 1965. He also became a member of the National Academy of Engineering in 1967.

Today, we still use the ideas that Gene Amdahl discovered. His rule about parallel computing is still used by experts. Parallel computing is when many parts of a computer work on a task at the same time. Even though he passed away in 2015, his legacy lives on. His work helped move us from giant machines to the fast computers we use now. He showed us that even the smartest machines have limits to how fast they can go.

Gene Myron Amdahl was a highly influential American computer architect and entrepreneur.

He is most famous for his work on mainframe computers. These are massive, powerful computing systems used by large organizations. Amdahl is also known for formulating Amdahl's law. This scientific principle describes a fundamental limitation in parallel computing. Parallel computing is a method where many processors work on parts of a task at the same time. Amdahl's law explains why adding more processors does not always result in a proportional increase in speed. This discovery remains a cornerstone of modern computer science.

Amdahl's journey began with a strong foundation in physics. He was born in Flandreau, South Dakota, to parents of Norwegian and Swedish descent. After serving in the Navy during World War II, he earned a degree in engineering physics from South Dakota State University in 1948. He then moved to the University of Wisconsin–Madison to study theoretical physics. In 1950, Amdahl and a fellow student named Charles H. "Charlie" Davidson proposed building a digital computer. With support from professors, they designed a unique machine. This led to his first computer, the Wisconsin Integrally Synchronized Computer, or WISC. He completed his doctorate in 1952 and joined IBM shortly after.

During his time at IBM, Amdahl worked on several landmark projects. He contributed to the development of the IBM 704 and the IBM 709. He also worked on the Stretch project, which served as the basis for the IBM 7030. Amdahl eventually left IBM in 1955 but returned in 1960. He rose to become the chief architect of the IBM System/360. In 1965, he was named an IBM Fellow. He also led the Advanced Computing Systems Laboratory in Menlo Park, California. His work during this period helped define the architecture of modern mainframe computing.

In September 1970, Amdahl left IBM again to start the Amdahl Corporation. He established this company in Sunnyvale, California, with major financing from Fujitsu. His goal was to compete directly with IBM in the mainframe market. He developed "plug-compatible" mainframes, which could work with existing IBM software and hardware. His first major machine, the Amdahl 470V/6, shipped in 1975. This machine was designed to be faster, more reliable, and less expensive than the IBM System 370/168. This allowed customers to run their applications without needing to buy entirely new IBM hardware.

The Amdahl Corporation grew into a massive global enterprise. By 1979, the company had sold more than US$1 billion of its V6 and V7 mainframes. It employed over 6,000 people around the world. The company also worked with Fujitsu engineers to develop high-performance disk drives. They also distributed the 4705, which was an IBM-plug-compatible front-end processor. These technological advancements helped solidify Amdahl's position as a leader in high-performance computing.

Beyond hardware, Amdahl was a profound theorist. At a 1967 computer conference, he discussed future architectural trends. He presented arguments regarding the physical limitations of computer performance. He theorized how special features or modes in new machines would be governed by these limits. This resulted in his two major and lesser "laws" regarding sequential versus parallel processing. These theories explain that the speed of a task is limited by the part that cannot be parallelized. This concept remains vital for engineers designing supercomputers today.

Amdahl remained an active entrepreneur throughout his later years. He founded Trilogy Systems in 1979 to design wafer-scale microprocessors. Although that specific project failed, he continued to launch new ventures. He founded Andor International in 1987 to create smaller, more efficient machines. In 1996, he co-founded Commercial Data Servers. This company developed machines with super-cooled processor designs, such as the ESP/490. His career was defined by a constant drive to push the boundaries of what hardware could achieve.

Gene Amdahl received many prestigious honors for his contributions to science. He was elected to the National Academy of Engineering in 1967. In 1983, he received the Harry H. Goode Memorial Award from the IEEE Computer Society. He was also named a Fellow of the Computer History Museum in 1998. Amdahl passed away on November 10, 2015, at the age of 92. He died from pneumonia in Palo Alto, California. His legacy continues through the laws of computing that still guide engineers every day.