Tests like this should not be marked as failed by jtreg:

    @Test
    public void test() {
        int cpus = Runtime.getRuntime().availableProcessors();
        if (cpus < 1024) {
            throw new org.testng.SkipException("Not enough CPUs: " + cpus);
        }
        // do the test ...
    }

===============================================
Default Suite
Total tests run: 1, Failures: 0, Skips: 1
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