Intel Chief Executive Pat Gelsinger has departed abruptly, ending a nearly four-year run that saw the chip maker fall behind rivals in building semiconductors to power the artificial-intelligence boom. The company on Monday named Chief Financial Officer David Zinsner and Michelle Johnston Holthaus, general manager of Intel’s client computing group, as interim co-CEOs. Intel was once the dominant semiconductor producer, but it has failed to keep up with rivals such as Nvidia and Advanced Micro Devices especially in artificial intelligence.