[bug] Can't compile or install from pip.

[matchyc]

For pip install .:

      tinyknn/_fast_pq.cpp:17539:320: error: can’t convert a value of type ‘int’ to vector type ‘__m128i’ {aka ‘__vector(2) long long int’} which has different size
      17539 |     __pyx_t_6 = __pyx_f_7tinyknn_8_fast_pq_compute_block_dists((&(*((__uint64_t *) ( /* dim=1 */ ((char *) (((__uint64_t *) ( /* dim=0 */ (__pyx_v_data.data + __pyx_t_4 * __pyx_v_data.strides[0]) )) + __pyx_t_5)) )))), ((__pyx_v_data.shape[1]) / 2), __pyx_v_tables, __pyx_v_signd); if (unlikely(__pyx_t_6 == ((__m128i)-1) && __Pyx_ErrOccurredWithGIL())) __PYX_ERR(0, 109, __pyx_L1_error)
            |                                                                                                                                                                                                                                                                                                                                ^
      tinyknn/_fast_pq.cpp:1498:43: note: in definition of macro ‘unlikely’
       1498 |   #define unlikely(x) __builtin_expect(!!(x), 0)

For pip install fast-pq:

      ValueError: 'fast_pq/_fast_pq.pyx' doesn't match any files
      [end of output]

[matchyc]

@thomasahle Hi, Could you please help me with this?

[thomasahle]

The errors you're encountering stem from a mismatch between the architecture of your system (ARM-based, since you're likely on an M1/M2 Mac) and the x86/x64-specific instructions being used in the code.

TinyKNN uses SIMD instructions everywhere. To work on more platforms you would either have to reimplement the assembly parts, like

#if defined(__x86_64__) || defined(_M_X64)
// x86-specific code (e.g., SIMD optimizations)
#elif defined(__aarch64__)
// ARM-specific code (e.g., NEON optimizations)
#endif

or switch to using some library underneath.